15 Largest Zoos in the World You Must Visit in 2025 (With Size Guide)

Most people would never guess the world’s largest zoo.  The Wilds Safari Park in Ohio takes this title with 9,154 acres of space.  Popular spots like the San Diego Zoo or Berlin Zoological Garden often come to mind first.

Size measurements for the “biggest zoos in the world” differ by a lot based on various criteria.  Nebraska’s Henry Doorly Zoo houses around 17,000 animals from 962 species.  Chester Zoo in England goes even bigger with over 35,000 animals.  Asia’s largest zoo, Sri Venkateswara Zoological Park, spreads across 5,532 acres.  The North Carolina Zoo also stands out with its 2,000-acre expanse.

Let’s explore the 15 biggest zoos around the globe.  We’ll look at their size, count their species, and highlight what makes each one special to help you plan your next wildlife trip.

Henry Doorly Zoo: America’s Largest Indoor Zoo Complex

Henry Doorly Zoo in Omaha, Nebraska, stands out with its remarkable indoor exhibits that stretch across seven acres.  The zoo covers 160 acres and features a variety of landscapes and immersive habitats from around the world.

Henry Doorly Zoo Size and Layout

The zoo combines vast outdoor spaces with climate-controlled indoor environments.  In fact, the indoor exhibits include North America’s largest indoor rainforest and the world’s largest indoor desert.  The facility also houses the world’s largest indoor swamp and the biggest aquarium you’ll find in any zoo.

Henry Doorly Zoo Key Attractions

The Desert Dome, a striking landmark, spreads across 84,000 square feet on two levels.  Visitors can explore three distinct desert ecosystems: the Namib Desert, Red Center of Australia and the Sonoran Desert.  Below the Desert Dome, you’ll find the Kingdoms of the Night, which holds the title of world’s largest nocturnal exhibit.

The Walter and Suzanne Scott Aquarium stretches over 71,000 square feet and holds 1.2 million gallons of water.  A spectacular 70-foot shark tunnel runs through a 17-foot-deep tank, serving as the aquarium’s centerpiece.  Visitors can experience aquatic habitats from polar regions to coral reefs throughout the facility.

Henry Doorly Zoo Visitor Information

The zoo welcomes visitors year-round with seasonal hours. Summer hours run from 9 AM to 5 PM, while winter hours are 10 AM to 4 PM.  Adult tickets (ages 12 and over) cost $19.95, children’s admission (ages 3-11) is $13.95 and seniors (65 and over) pay $17.95.  Military members get special rates, with adults paying $17.95 and children $12.50.

Sri Venkateswara Zoological Park: Asia’s Largest Zoo

The 36-year old Sri Venkateswara Zoological Park in Tirupati, India, stands as proof of modern zoo management principles.

Sri Venkateswara Zoo Area Coverage

Asia’s largest zoological park covers 5,532 acres.  The zoo has developed 289 hectares out of its total 1,254.71 hectares for visitor access and animal exhibits.  Natural undulating landscapes with forest-covered valleys create perfect habitats for its residents.  Dry deciduous mixed forests dominate the park’s layout and go together with patches of moist deciduous forests in the valleys.

Sri Venkateswara Zoo Wildlife Collection

The zoo’s diverse collection has:

• 31 species of mammals
• 46 species of birds
• 7 species of reptiles

Tigers, panthers, sloth bears, and various deer species make up the zoo’s notable residents.  Gray pelicans, purple herons and white-necked storks enhance the park’s avian collection.  The reptile section features marsh crocodiles, Indian pythons and starred tortoises.

Sri Venkateswara Zoo Conservation Efforts

The park runs several vital conservation programs.  The facility prioritizes breeding endangered species native to the Eastern Ghats.  Moreover, the park also manages rescue and rehabilitation programs for orphaned, seized and injured wildlife.

The conservation strategy includes research programs that study:

• Animal behavior and diseases
• Feed and nutrition
• Reproductive biology

Visitors can support wildlife conservation through the park’s innovative animal adoption program.  The facility’s information center educates visitors about endangered species and ongoing conservation efforts.

The Wilds Safari Park: Most Expansive Zoo Worldwide

Wilds is North America’s largest wildlife conservation center.  This innovative facility covers 9,154 acres of reclaimed coal mine land in Cumberland, Ohio.  The 39-year-old center has become a landmark for wildlife preservation.

Wilds Safari Park Size Details

The property features 2,000 acres of pastures and a 27-acre Carnivore Conservation Center.  The beautiful landscape stretches along the Appalachian Byway and welcomes 120,000 visitors each year.  Nearly 100 lakes dot the property and create perfect habitats for its residents.

The Wilds Safari Park Animal Species

More than 500 animals from 28 rare and endangered species call this conservation center home.  Some remarkable residents include:

• Southern white rhinoceros
• Przewalski’s horses
• Masai giraffes
• Persian onagers
• Sichuan takin

The center excels at breeding programs and celebrates new births every year.  The facility welcomed 225 births and hatchings in 2022, which included 150 insects, 18 birds and 57 mammals.

Wilds Safari Park Experience

Visitors can discover this amazing sanctuary through several tour options.  The Open-Air Safari lets guests enjoy panoramic views of animals in their natural habitats.  Specialized four-wheel-drive vehicles take guests close to wildlife during Wildside Tours.

The center opens from May through October.  Guests can enjoy zipline safaris over animal pastures, horseback rides through quiet prairies and fishing adventures on the many lakes.  Overnight stays are available in private yurts at Nomad Ridge, The Lodge that fits up to 12 people or family-friendly cabins at Straker Lake.

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Columbus Zoo: North America’s Most Diverse Collection

The Columbus Zoo and Aquarium serves as the life-blood of wildlife conservation and education, providing a home to 10,000 animals from 600 species.

Columbus Zoo Layout and Size

The zoo stretches over 130 acres with carefully crafted regions that mirror natural environments worldwide.  Moreover, the Heart of Africa stands out as a remarkable region, covering 43 acres of savannah where zebras, gazelles and wildebeests roam freely.  The facility’s complex animal habitats complement these outdoor spaces and are split into distinct geographical zones.

Columbus Zoo Notable Exhibits

Wildlife preservation remains the zoo’s steadfast dedication, shown through its collection that has 34 endangered and 11 threatened species.  The zoo’s main attractions include:

• The Manatee Coast Boat with its unique above and below-water views
• Asia Quest where tigers, elephants, and red pandas thrive
• The Kangaroo Walkabout that creates an authentic Australian experience

Columbus Zoo Visitor Guide

The zoo welcomes visitors throughout the year with seasonal events that boost the experience.  Special occasions light up the calendar, from Boo at the Zoo in fall to Wildlights during holidays.  Visitors can store their belongings near Wild Burger and Adventure Cove.  The zoo allows outside food and drinks, though safety rules ban glass containers, alcohol and straws.

National Zoological Gardens: Africa’s Premier Wildlife Park

The National Zoological Garden of South Africa spreads across 80 hectares of beautiful terrain.  This 124-year-old zoo ranks among the world’s eight largest zoos and remains the country’s only zoo with national status.

National Zoo Geographic Layout

The Apies River naturally splits the zoo into two distinct sections.  Visitors can explore the grounds through 6 kilometers of connecting pathways.  Two bridges connect the flat terrain to the hillside sections.  A cable car system makes it easy to travel between the main entrance and the hilltop area.

National Zoo Animal Diversity

The zoo’s remarkable wildlife collection includes:

• 3,117 mammals across 209 species
• 1,358 birds representing 202 species
• 3,871 fish from 190 species
• 388 invertebrates
• 309 reptiles spanning 93 species

The zoo houses one of the world’s largest antelope collections and has achieved several breeding milestones.  It made history as the first facility to breed the aardwolf, a member of the hyena family.

National Zoo Practical Information

Each year, 600,000 people visit this amazing facility.  Two restaurants serve visitors throughout the grounds and a crafts market near the entrance showcases local artisanal products.  The zoo’s inland marine aquarium is the country’s largest and its collection of exotic trees ranks as the third-largest nationwide.

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Toronto Zoo: Canada’s Largest Wildlife Park

The Toronto Zoo, established in 1974, has evolved into Canada’s leading wildlife facility.  It spans across 710 acres of the Rouge River watershed.

Toronto Zoo Size Overview

The zoo’s layout features seven distinct zoogeographic regions:

• Indo-Malaya
• Africa (Rainforest and Savanna)
• Americas
• Australasia
• Eurasia Wilds
• Canadian Domain
• Tundra Trek

Visitors can explore 10 kilometers of walking trails.  The zoo’s natural environments remain pristine through careful landscaping that moved 430,000 cubic meters of earth.

Toronto Zoo Key Attractions

This wildlife sanctuary houses 5,000 animals from 495 species.  The African pavilion creates authentic jungle environments where gorillas and bongo antelope thrive.  The Canadian Domain covers 166 hectares and features train rides that let visitors watch native wildlife up close.

Toronto Zoo Visit Planning

The zoo draws 1.3 million visitors each year and stays open year-round.  Guests can enjoy complete amenities with four seasonal snack bars, two restaurants and several picnic spots.  Parking costs USD 15.00.  The facility caters to visitors with disabilities through wheelchair rentals and adapted pavilions.

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Beijing Zoo: China’s Historic Animal Kingdom

Beijing Zoo started as an imperial manor in 1906 and has grown to become one of China’s most important wildlife sanctuaries.  The zoo spreads across 86 hectares of land.

Beijing Zoo Area Coverage

The zoo’s grounds feature 8.6 hectares of water bodies and beautiful flower gardens with natural landscapes.  Visitors can explore 16 different exhibition areas that showcase both local and exotic wildlife.  The landscape includes thick groves, grasslands, lotus pools and small hills decorated with traditional pavilions.

Beijing Zoo Famous Exhibits

More than 5,000 animals from 500 species call this zoo their home.  The Panda House, built in 1989, is the zoo’s crown jewel and covers 10,000 square meters.  Here are the zoo’s remarkable exhibits:

• The Gorilla Hall from 1987 comes with specialized medical and mating facilities
• The Beijing Aquarium stands as the world’s largest inland aquarium
• The Lion and Tiger Mountain houses African lions and Bengal tigers

Beijing Zoo Essential Information

The zoo’s summer schedule (April-October) runs from 7:30 AM to 6:00 PM.  Ticket prices change with seasons – CNY 15 during peak months and CNY 10 in off-peak season.  Visitors can buy combination tickets that include Panda House access along with the main zoo entrance.  About 6 million people visit the zoo each year and it’s easy to reach through various public transport options.

Berlin Zoological Garden: Europe’s Species Champion

The Berlin Zoological Garden, a 179-year-old institution, is one of the world’s richest zoos in terms of species.  It spans 35 hectares within Berlin’s Tiergarten.

Berlin Zoo Size Details

The zoo grounds showcase a well-planned layout that combines outdoor enclosures with specialized houses.  Ancient trees and historic buildings blend naturally to create a distinctive architectural landscape.  Built in 1913, the aquarium houses most of the zoo’s reptiles, amphibians and invertebrates as a key part of the complex.

Berlin Zoo Notable Collections

The zoo houses 1,380 different species with more than 20,200 animals, making it one of the world’s most detailed wildlife collections.  The facility takes pride in protecting:

• Rare cattle breeds, including pioneering success with mountain anoa breeding
• Endangered species like okapis, bonobos and Amur tigers
• A rich primate collection that includes orangutans, gorillas, chimpanzees and bonobos

Berlin Zoo Visitor Experience

The zoo attracts more than 3.5 million visitors each year. Its specialized exhibits create memorable experiences.  Germany’s only giant pandas, Jiao Qing and Meng Meng, live in the Panda Garden.  They made history when Germany’s first panda cubs were born in 2019.  The Empire of Cats, which opened in 2022, lets visitors get close to jaguars and tigers.  The Zoo School runs various educational programs and works with Berlin universities on research projects.

San Diego Zoo Safari Park: California’s Mega Zoo

The San Diego Zoo Safari Park sits in the San Pasqual Valley as a trailblazing wildlife sanctuary that brings real-life safari adventures to its visitors.

San Diego Zoo Park Size

This incredible facility covers 1,800 acres of varied terrain.  We used this land to create both developed areas and natural habitats.  The park’s botanical collection amazes visitors with more than 1.3 million plants from over 3,700 species. 900 acres of the land remain untouched, supporting coastal sage scrub vegetation that acts as a crucial habitat corridor.

San Diego Zoo Highlights

More than 3,000 animals from over 300 species call this park their home.  Visitors can experience several safari adventures:

• Wildlife Safari through vast savanna habitats
• Behind-the-Scenes Safari with up-close wildlife encounters
• Cart Safari with tailored guided tours
• Flightline Safari featuring a 2/3-mile zipline adventure

The park’s crown jewel is the Africa Tram that takes guests on a 2.5-mile guided journey around sprawling savanna habitats.  The park’s commitment to wildlife goes way beyond the reach and influence of exhibitions – it runs the world’s largest veterinary hospital.

San Diego Zoo Planning Guide

Guests can visit the park daily from 9 AM to 5 PM.  Standard vehicle parking costs USD 20, while preferred parking is available at USD 38.  The park features complete accessibility options with ADA shuttle services and designated paths for guests who need mobility assistance.  A mobile app with GPS-enabled maps and digital ticket integration helps improve the visitor experience.

Moscow Zoo: Russia’s Largest Animal Collection

Moscow Zoo, 159 years old, is Russia’s largest animal sanctuary that spans 21.4 hectares.

Layout of Moscow Zoo

Two interconnected territories make up the zoo.  Bolshaya Gruzinskaya Street runs between these sections.  A unique footbridge built during the 1990s renovation connects both parts.  The zoo combines small unbarred enclosures with large paddocks for herds.  Visitors can explore custom-built enclosures, an aquarium, and an aviary throughout the grounds.

Moscow Zoo Key Exhibits

The zoo’s diverse wildlife collection includes 24,500 animals from 1,226 species.  These remarkable exhibits feature:

• A tropical rainforest habitat
• An Arctic animals exhibit
• A sea lion showcase
• A children’s petting zone

Several record-breaking species call this zoo home, such as giraffes, Chinese alligators and reticulated pythons.  The zoo runs a 200-hectare conservation center near Volokolamsk City that breeds rare and endangered species.

Moscow Zoo Visitor Tips

The zoo welcomes visitors from 9 AM to 5 PM, with ticket sales ending at 4 PM.  The facility stays closed on Mondays.  Ticket prices change with seasons:

• Weekdays: 600 Rubles
• Weekends: 800 Rubles

Visitors can find various amenities including a gift shop with souvenirs and t-shirts.  The zoo’s museum makes a perfect final stop, showcasing more than 10,000 zoo coat of arms from around the world and a collection of paintings and sculptures by Russian animalistic masters.

Bronx Zoo: New York’s Wildlife Wonder

The Bronx Zoo has been New York City’s premier wildlife destination since 1899.

Bronx Zoo Size Overview

The zoo spans 265 acres of hardwood forest with naturalistic habitats divided by the Bronx River.  Beautiful Beaux-Arts pavilions surround the circular sea lion pool, creating stunning landscapes.  The park preserves 260 acres of natural forest right in the Bronx’s heart.

Bronx Zoo Major Attractions

More than 11,000 animals from over 640 species call this facility home.  The zoo’s star exhibits include:

• Tiger Mountain – a three-acre exhibit showcasing Amur tigers
• Congo Gorilla Forest – featuring unique gorilla personalities and interactions
• JungleWorld – displaying Asian wildlife, including ebony langurs
• Madagascar – recreating various habitats with lemurs and fossas

Bronx Zoo Visit Planning

The zoo welcomes visitors year-round with flex pricing to manage attendance.  Tickets start at USD 30.95 for adults (13 & over), USD 26.95 for seniors (65 & over) and USD 20.95 for children (3-12).  Visitors can choose weekend preferred parking at Fountain Circle for USD 30.00 instead of standard parking.  The zoo’s mobile app provides interactive maps and accessibility features to help guests navigate easily.

Chester Zoo: UK’s Largest Wildlife Haven

Chester Zoo stands as a global conservation leader with 128 acres of carefully crafted habitats.

Details of Chester Zoo Area

The zoo features exhibits and award-winning gardens in various zones.  The Tropical Realm and Monsoon Forest are the star attractions that draw visitors year-round.  This massive wildlife sanctuary houses more than 37,000 animals in specialized areas, making it one of Britain’s largest.

Chester Zoo Notable Species

More than 500 species call this zoo their home.  The zoo focuses heavily on protecting endangered wildlife.  Strong partnerships with 62 organizations across 20 countries have helped create a global conservation network.  The zoo teams up with governments in Bermuda, Spain and Portugal to achieve remarkable breeding success.

Chester Zoo Essential Info

Visitors can enter the zoo at 10 AM, while the Diamond Jubilee Quarter opens earlier at 9:30 AM.  The zoo provides curriculum-linked workshops and learning resources that make it perfect for both family outings and school trips.  Guests can enjoy several dining options throughout their visit.  The Oakfield, a modern British pub, sits at the heart of the grounds.  The zoo welcomes visitors every day except Christmas Day and Boxing Day.

Arignar Anna Zoo: India’s Wildlife Sanctuary

Arignar Anna Zoological Park, India’s first public zoo, opened in 1855 and stands as proof of excellence in wildlife conservation.

The Arignar Anna Zoo Size

The wildlife sanctuary covers 602 hectares of land and ranks among Southeast Asia’s largest zoos.  You’ll find 160 enclosures spread across two distinct zones with proper fencing between them.  The original zone houses smaller mammals, while animals roam freely in the free-range zone.

Arignar Anna Zoo Exhibits

The zoo houses about 1,500 wild species, with 46 endangered species.  Some amazing attractions include:

• Prehistoric Animal Park
• Wildlife Safari
• Butterfly House with natural waterfalls
• Virtual zoo with modern technology
• Herpetarium and insectarium

A natural tree-lined lake provides a perfect spot for migratory birds.  The zoo also runs a rescue and rehabilitation center that spans 92.45 hectares.

Arignar Anna Zoo Guide

The zoo opens daily from 9 AM to 5 PM, except Tuesdays.  Visitors can take walking tours or ride battery-operated vehicles.  Aavin and TANTEA stalls offer refreshments and snacks.  The facility uses solar lights, water sprinklers and rainwater harvesting systems to stay eco-friendly.  CCTV cameras monitor the premises, while TWAD Tamil Nadu and IIT Madras’s atmospheric water generators ensure adequate water supply.

Miami Zoo: Florida’s Largest Animal Park

Miami Zoo stands as Florida’s largest zoological institution.  It spreads across 750 acres with 4 miles of winding walkways.

Miami Zoo Layout

The zoo covers 340 developed acres on a 740-acre plot. We designed it as a cage-less facility with moated exhibits.  The grounds showcase more than 1,200 trees and plants that create a lush, tropical atmosphere.  Visitors are greeted by an eye-catching American flamingo exhibit and a welcoming canopy structure at the main entrance.

Miami Zoo Key Attractions

The zoo is home to more than 2,000 animals from 375 species.  Its remarkable exhibits include:

• Florida Mission Everglades with Lostman’s River airboat ride
• Australian habitat with koalas and tree-kangaroos
• Sami Family Amphitheater with 800 seats
• Conservation Action Center with interactive displays

The facility protects more than 130 species that are endangered or critically endangered.

Miami Zoo Visitor Information

The zoo welcomes visitors daily with several exploration choices.  Guests can pick from safari cycles, tram tours or walking adventures.  The facility offers various dining options – Nourish 305 serves custom salads while Miami BGR specializes in burgers.  Indeed, the zoo can host events of any size, from intimate gatherings of 20 guests to large celebrations with up to 3,000 participants.  The zoo’s dedication to conservation shows through its involvement in 36 projects across six continents.

Comparison Table

Enjoy the Largest Zoos in the World

Modern zoos showcase wildlife conservation and education across the globe.  The Wilds Safari Park leads with 9,154 acres, making it the world’s largest zoo.  Berlin Zoo makes excellent use of its compact space to house more than 20,000 animals.

Each zoo brings something special to the table.  Henry Doorly Zoo shines with its indoor complexes.  San Diego Zoo Safari Park takes visitors on authentic African safari adventures.  Beijing Zoo features historic imperial gardens, while Chester Zoo maintains strategic collaborations across 20 countries.

These institutions play vital roles beyond entertainment.  Their breeding programs protect endangered species.  Research projects help scientists understand wildlife better.  Educational initiatives shape the next generation of conservationists.  Through specialized care and habitat preservation, these facilities protect thousands of species.

The 15 largest zoos represent excellence in wildlife conservation.  They combine vast natural habitats with innovative research facilities.  Their achievements in breeding endangered species and their steadfast dedication to public education show how modern zoological institutions protect Earth’s biodiversity.

FAQs

Q1. Which zoo is considered the largest in the world?
The Wilds Safari Park in Ohio, USA, is recognized as the largest zoo in the world, spanning an impressive 9,154 acres of reclaimed coal mine land.

Q2. What is unique about the Henry Doorly Zoo in Nebraska?
Henry Doorly Zoo in Omaha, Nebraska, is known for having North America’s largest indoor rainforest and the world’s largest indoor desert, as well as the largest aquarium within a zoo.

Q3. How many animals does the Berlin Zoological Garden house?
The Berlin Zoological Garden is home to over 20,200 animals representing 1,380 different species, making it one of the most species-rich zoos globally.

Q4. What conservation efforts does Chester Zoo undertake?
Chester Zoo maintains partnerships with 62 organizations across 20 countries worldwide, focusing on breeding endangered species and collaborating with governments in various nations for wildlife preservation.

Q5. What makes the San Diego Zoo Safari Park stand out?
The San Diego Zoo Safari Park offers unique safari experiences, including a 2.5-mile guided expedition around expansive savanna habitats via the Africa Tram and houses the world’s largest veterinary hospital.