Brookfield Zoo Chicago, is a zoo located in the Chicago suburb of Brookfield, Illinois. In 1919, Edith Rockefeller McCormick donated land she had received from her father as a wedding gift to the Cook County Forest Preserve District for the development as a zoological garden. The district added 98 acres to that plot and in 1921, the Chicago Zoological Society was established.

It quickly gained international recognition for using moats and ditches instead of cages to separate animals from visitors and from other animals. The zoo was also the first in America to exhibit giant pandas. In 1960, Brookfield Zoo Chicago built the nation's first fully indoor dolphin exhibit, and in the 1980s the zoo introduced Tropic World, the first fully indoor rainforest simulation and the then-largest indoor zoo exhibit in the world

Budapest Zoo and Botanical Gardens is one of the oldest in the world. The idea of the foundation dates back to 1820-30s but it opened only on 9th August 1866. It was an initiative of a group of patriots among others geologist József Szabó, Ágoston Kubinyi, the Director of the National Museum, József Gerenday, the Director of the Botanical Garden of Budapest, and János Xántus, a zoologist, ethnographer, and the first director of the zoo

The Zoological Garden, Alipore (also informally called the Alipore Zoo or Kolkata Zoo) is India's oldest formally stated zoological park.

The zoo had its roots in a private menagerie established by the Governor General of India, Richard Wellesley, established around 1800 inn his summer home at Barrackpore near Kolkata, as part of the Indian Natural History Project. The first superintendent of the menagerie was the Scottish physician zoologist Francis Buchanan-Hamilton. Sir Stamford Raffles visited the menagerie in 1810, and doubtless used come aspects of the menagerie as an inspiration for London Zoo

Chessington World of Adventures Resort is a 128 acres theme park, zoo and hotel complex in Chessington, Greater London, England. The complex originally opened as Chessington Zoo in 1931; the theme park aspect was developed by The Tussauds Group, debuting in 1987 as one of the first combined animal-amusement parks in the United Kingdom. The zoo was started by Reginald Stuart Goddard, who had bought the estate to showcase his private collection of animals. It was once the largest private zoo in England. After Goddard died in 1946, the Pearson Publishing Company took over the zoo and managed it until 1978, when The Tussauds Group, a subsidiary of the Pearson Group, took control

Chester Zoo is a zoo at Upton-by-Chester, Cheshire, England. It was opened in 1931 by George Mottershead and his family. It is operated by the North of England Zoological Society, a registered charity founded in 1934

Brookfield Zoo Chicago, also known as the Chicago Zoological Park, is a zoo located in the Chicago suburb of Brookfield, Illinois. It opened on July 1st 1934 and quickly gained international recognition for using moats and ditches instead of cages to separate animals from visitors and from other animals. The zoo was also the first in America to exhibit giant pandas.

In 1919 Edith Rockefeller McCormick donated land she had received from her father as a wedding gift to the Cook County Forest Preserve District for development as a zoological garden. The district added 98 acres to that plot and in 1921 the Chicago Zoological Society was established

Copenhagen Zoo is a zoological garden in Copenhagen, Denmark. Founded in 1859, it is one of the oldest zoos in Europe. It was founded by the ornithologist Niels Kjærbølling. He was given the summer garden of "Prinsess Vilhelmines Have" (the garden of Princess Vilhelmine) by the chief directorate of Copenhagen

Dierenpark Wassenaar is a former zoo located in the Netherlands which was closed down due to lack of funds. The zoo was founded in 1937 by the wealthy car importer Piet Louwman, and continued by Jan Louwman. Piet Louwman also had a collection of tropical birds in his home in Wassenaar. In the early years, the park's population consisted mainly of birds, elephants and tigers, but was soon expanded to include a large collection of great apes, including chimpanzees and orangutans. The zoo was also able to take over animals from The Hague Zoo which was closed in 1943

Dresden Zoo is a zoo in the city of Dresden, Germany. It was opened in 1861, making it Germany's fourth oldest zoo. It was originally designed by Peter Joseph Lenné

Dublin Zoo in Phoenix Park, is a zoo in Dublin, Ireland. Established and designed in 1830 by Decimus Burton. Today it focuses on conservation projects, breeding programmes, and growing awareness for animals.

The Royal Zoological Society of Dublin was established at a meeting held at the Rotunda Hospital on 10th May 1830 and the Zoo, then called the Zoological Gardens Dublin, was opened to the public on 1st September 1831. The animals, 46 mammals and 72 birds, were donated by London Zoo and the Royal Menagerie of the Tower of London