8 Largest Zoos in the World

Martina Rosado
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Columbus Zoo and Aquarium

Average Number of Visitors per Year: 2.06 million

Size: 63.4 acres

This zoo includes exhibits of a variety of different animals from across the globe, as well as a petting zoo, a water park, a butterfly house, and the Wilds. It is the largest zoo in Ohio and comes in as the 8th largest zoo in the United States.

San Diego Zoo

Average Number of Visitors per Year: 2.15 million

Size: 2,300 acres

This zoo is a member of the Association of Zoos and Aquariums and is home to over 1,600 species of animals. It includes the La Jolla California Conservation Park.

Zoological Park of Antwerp

Average Number of Visitors per Year: 2.15 million

Size: 32.3 acres

Part of the Flemish Service for Nature and Forestry and located in the city of Antwerp, the zoo was established in 1869. They also offer a small petting zoo and a child’s playground.

Zoo Atlanta

Average Number of Visitors per Year: 2.2 million

Size: 352 acres

Moscow Zoo

San Diego Zoo

A visit to the San Diego Zoo is a true wildlife experience. It houses more than 4,000 animals, and includes the largest koala habitat in North America. Attractions include Elephant Odyssey, Deserts Alive, and Zoo World. It’s located near Balboa Park in San Diego.

Toronto Zoo

(230,300 sq. km.)

Toronto Zoo is a zoo located in Toronto, Ontario, Canada. It is one of the world's largest zoos, over 230,000 square metres with over 31,000 animals of 732 species. It is located near the Walnut Creek, with an average of 3,000,000 visitors each year.

Toronto Zoo is the home of the world-acclaimed Sumatran tiger cubs, Syaiha and Syahrul, and bears Toksi and Migaloo, as well as the majestic Canadian snowy owls. Together with the five other Ontario zoos, the Zoo has the potential to become the world’s first model for conservation, the conservation culture of Canadian zoos will influence the other Canadian zoos and the rest of the world,… said Matthias Stachel, a zookeeper.

Bronx Zoo

Beijing Zoo

Berlin Zoological Garden

Berlin, Germany.

The Berlin Zoological Garden is one of the oldest zoos in the world. The zoo opened in 1844, just a few years after a society was formed in Berlin to create a zoological garden in the city. The society was formed by the Berlin-based physician and zoologist, Georg August Goldfuss, who was also one of the founders of the Berlin Academy of Sciences. There are over 38,000 animals in this one garden, representing about 4000 different species.

One of the two most important attractions in this particular zoo is the Pinnacled Monkey House. This is a very popular attraction with the visitors of the Berlin Zoo. This is because this aquarium exhibits the world’s only species of large-brained (higher hominids with large brain capacity) pinniped (seals and sea lions).

This is one of the rarest forms of vertebrate life on the planet. There are only about 1000 Micronesians in the world and only 10 of these are macaques or common monkeys. There are only 2 from the island of Guam. Only one of these is in a zoo anywhere in the world, The Pinnacled Monkey House, located in the Berlin Zoo.

Henry Doorly Zoo

The Henry Doorly Zoo and Aquarium is the largest African zoological facility in North America and the seventh largest in the world boasting over 400 species as well as being a research and conservation facility. It is located in Omaha, Nebraska.

The zoo was built in 1898 by Earl Daugherty on land he had acquired, and it was opened to the public in 1899. In 1907, the zoo was purchased by businessman and philanthropist, Henry Doorly and the zoo ran on a deficit until he died. It was during this period that the zoo was renovated, and in 1911, it started to become financially stable.

During the Great Depression, the zoo continued to operate, despite the financial challenges and it was during this period that it was able to run on a surplus. It is possible that it was during this time that the zoo received its famous lions, as they are the only African lions in the United States.

The zoo was then purchased by the city of Omaha in 1963. It was also during the Great Depression that the zoo began its work as a research and conservation facility. While it has continued to grow in size, it has remained financially stable.

The zoo has a total of 250 acres of land and a total of 67 buildings, making it the largest zoo in the United States. The zoo is also the largest research facility in the country.