The San Diego Zoo is a big park. 
The San Diego Zoo is a big park in California. 
The San Diego Zoo is in California. 

The zoo was a leader in a new way of making homes for animals. Instead of small cages, they built open areas. These areas look like the places where animals live in the wild. Some spots even have water moats to keep animals safe. You can see animals in a rainforest or in a cold place.
Visitors can see the zoo from high up. They can ride the Skyfari, which is a gondola lift.
The San Diego Zoo is a famous place for animals in California. 
This zoo works in a very special way to keep animals happy. Instead of using small, metal cages, it uses open-air exhibits. These areas are designed to look like natural habitats from the wild. For example, some spots look like an African rainforest. Other areas look like a cold, snowy tundra. To keep animals safe without wires, the zoo uses water moats. These are deep pools of water that act like a barrier. This allows visitors to see animals in a way that feels real. 
The zoo has a long and interesting history. It started with animals left over from a big fair in 1915. Dr. Harry M. Wegeforth founded the Zoological Society of San Diego in 1916. He was the president for many years until 1941. In 1921, the city set aside land in Balboa Park for the zoo. Later, a woman named Belle Benchley became the zoo director. She led the zoo from 1925 until 1953.
There are many amazing facts about the animals here. The zoo sits on 100 acres of land. It is home to over 12,000 animals from more than 680 species. 

You can see the zoo in many different ways. You can walk the paths to see monkeys in the Monkey Trails. 
The San Diego Zoo is a world-renowned zoological institution located in Balboa Park, California. It serves as a major center for animal care and scientific study. The zoo is managed by the San Diego Zoo Wildlife Alliance, which is a private nonprofit conservation organization. This organization also operates the San Diego Zoo Safari Park, a much larger facility located 30 miles northeast in Escondido. 
The zoo is famous for its innovative approach to animal housing. Instead of using traditional metal cages, it pioneered the use of open-air, cageless exhibits. These exhibits are designed to recreate the natural habitats of the animals. For example, the zoo features an African rainforest and an Arctic tundra. To keep large animals contained without visible wires, the zoo uses moats. These are deep, open-air water barriers that separate animals from visitors. This method allows for a more naturalistic environment. Many exhibits also use invisible wires or darkened blinds to allow birds to fly freely. 
The history of the zoo began with the 1915 Panama–California Exposition. Dr. Harry M. Wegeforth founded the Zoological Society of San Diego on October 2, 1916. He served as the society's president until 1941. In August 1921, a permanent tract of land was set aside in Balboa Park. The city of San Diego owns the animals, while the zoo manages them.
In 1938, the zoo gained national attention during a difficult animal transport. Two three-year-old giraffes, named Lofty and Patches, were sent from British East Africa. They traveled by freighter for 54 days and survived the Hurricane of 1938 at sea. After arriving in the United States, they spent 16 days at a quarantine station in New Jersey. They were then driven 14 days across the country in a customized 1938 International D-40 truck. 
The zoo manages a massive biological collection on its 100 acres of land. It houses over 12,000 animals representing more than 680 species and subspecies. 
Conservation is a central part of the zoo's mission. In 1975, the Center for Reproduction of Endangered Species (CRES) was founded. This center was later renamed the Division of Conservation and Research for Endangered Species. In 2009, it expanded further to become the Institute for Conservation Research. 
Visitors can explore the zoo through various transportation methods. A guided tour bus travels through 75% of the park. There is also an overhead gondola system called the Skyfari. The Skyfari was built in 1969 by the Von Roll tramway company from Switzerland. 
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