London Zoo, previously known as ZSL London Zoo or London Zoological Gardens and sometimes called Regent's Park Zoo, is the world's oldest scientific zoo. It was opened in London on 27 April 1828, and was originally intended to be used as a collection for scientific study. In 1831 or 1832, the animals of the Tower of London menagerie were transferred to the zoo's collection. It was opened to the public in 1847. As of December 2022, it houses a collection of 14,926 individuals, making it one of the largest collections in the United Kingdom.
The Bronx Zoo is a zoo within Bronx Park in the Bronx, New York. It is one of the largest zoos in the United States by area and is the largest metropolitan zoo in the United States by area, comprising 265 acres (107 ha) of park lands and naturalistic habitats separated by the Bronx River. On average, the zoo has 2.15 million visitors each year as of 2009. The zoo's original permanent buildings, known as Astor Court, were designed as a series of Beaux-Arts pavilions grouped around the large circular sea lion pool. The Rainey Memorial Gates were designed by sculptor Paul Manship in 1934 and listed on the National Register of Historic Places in 1972.
The Saint Louis Zoo, officially known as the Saint Louis Zoological Park, is a zoo in Forest Park, St. Louis, Missouri. It is recognized as a leading zoo in animal management, research, conservation, and education. The zoo is accredited by the Association of Zoos and Aquariums (AZA). Admission is free based on a public subsidy from a cultural tax district, the Metropolitan Zoological Park and Museum District (ZMD); fees are charged for some special attractions. A special feature is the 2 ft narrow-gauge Emerson Zooline Railroad with passenger trains pulled by Chance Rides C.P. Huntington locomotives that encircle the zoo, stopping at the more popular attractions.
The National Zoological Park, commonly known as the National Zoo, is one of the oldest zoos in the United States. The zoo is part of the Smithsonian Institution and does not charge admission. Founded in 1889, its mission is to "provide engaging experiences with animals and create and share knowledge to save wildlife and habitats".
The San Diego Zoo is a zoo in Balboa Park, San Diego, California, housing 4,000 animals of more than 650 species and subspecies on 100 acres (40 ha) of Balboa Park leased from the City of San Diego. Its parent organization, San Diego Zoo Wildlife Alliance, is a private nonprofit conservation organization, and has one of the largest zoological membership associations in the world, with more than 250,000 member households and 130,000 child memberships, representing more than a half million people.
The Houston Zoo is a 55-acre (22 ha) zoological park located within Hermann Park in Houston, Texas, United States. The zoo houses over 6,000 animals from more than 900 species. It receives around 2 million visitors each year and is the second most visited zoo in the United States, surpassed only by the San Diego Zoo. It is accredited by the Association of Zoos and Aquariums (AZA).
Dudley Zoo & Castle is a 40-acre (16 ha) zoo located within the grounds of Dudley Castle in the town of Dudley, in the Black Country region of the West Midlands, England. The Zoo opened to the public on 18 May 1937. It contains 12 modernist animal enclosures and other buildings designed by the architect Berthold Lubetkin and the Tecton Group. The zoo went into receivership in 1977 and was purchased by Dudley Metropolitan Borough Council. Dudley Zoo is now operated by Dudley and West Midlands Zoological Society, founded in 1978 and a registered charity.
The Philadelphia Zoo, located in the Centennial District of Philadelphia on the west bank of the Schuylkill River, is the first true zoo in the United States. It was chartered by the Commonwealth of Pennsylvania on March 21, 1859, but its opening was delayed by the Civil War until July 1, 1874. The zoo opened with 1,000 animals and an admission price of 25 cents. For a brief time, the zoo also housed animals brought to U.S. from safaris by the Smithsonian Institution, which had not yet built its National Zoo.
Lincoln Park Zoo, also known as Lincoln Park Zoological Gardens, is a 35-acre (14 ha) zoo in Lincoln Park, Chicago, Illinois. The zoo was founded in 1868, making it the fourth oldest zoo in North America. It is also one of a few free admission zoos in all of North America. The zoo is an accredited member of the Association of Zoos and Aquariums (AZA). The zoo also became an accredited arboretum in 2019.
The Detroit Zoo is a zoo located in the cities of Huntington Woods and Royal Oak in the U.S. state of Michigan. Spanning 125 acres (50.6 ha), it houses more than 2,000 animals and more than 200 different species. It was the first U.S. zoo to feature bar-less habitats, and is regarded to be an international leader in animal welfare, conservation and sustainability by the Detroit Zoological Society.
The Berlin Zoological Garden is the oldest surviving and best-known zoo in Germany. Opened in 1844, it covers 35 hectares and is located in Berlin's Tiergarten. With about 1,380 different species and over 20,200 animals, the zoo presents one of the most comprehensive collections of species in the world.
The Memphis Zoo is a zoo in Midtown, Memphis, Tennessee, United States. It is home to more than 3,500 animals representing over 500 different species. Created in April 1906, the zoo has been a major tenant of Overton Park for more than 100 years. The land currently designated to the Memphis Zoo was defined by the Overton Park master plan in 1888, it is owned by the City of Memphis. The zoo is set on 76 acres (31 ha), of which approximately 55 acres (22 ha) are developed.
Antwerp Zoo is a zoo in the centre of Antwerp, Belgium, located next to the Antwerpen-Centraal railway station. It is the oldest animal park in the country, and one of the oldest in the world, established on 21 July 1843.
Adelaide Zoo is Australia's second oldest zoo, and it is operated on a non-profit basis. It is located in the parklands just north of the city centre of Adelaide, South Australia. It is administered by the Royal Zoological Society of South Australia Incorporated, which is a full institutional member of the Zoo and Aquarium Association and the World Association of Zoos and Aquariums, and which also administers the Monarto Safari Park near Murray Bridge.
The Dakota Zoo is a zoo in Bismarck, North Dakota located on the banks of the Missouri River. It is the third zoo built in North Dakota.
Sofia Zoo in Sofia, the capital of Bulgaria, was founded by royal decree on 1 May 1888, and is the oldest and largest zoological garden in Southeast Europe. It covers 36 hectares and, in March 2006, housed 4,850 animals representing 840 species.
Denver Zoo is an 80-acre (32 ha) nonprofit zoological garden located in City Park of Denver, Colorado, United States. Founded in 1896, it is operated by the Denver Zoological Foundation and funded in part by the Scientific and Cultural Facilities District (SCFD) in addition to ticket sales and private donations. It is the most visited paid attraction in Colorado.
The Giza Zoo is a zoological garden in Giza, Egypt. It is one of the few green areas in the city, and includes Giza's largest park. The zoo covers about 80 acres (32 ha), and is home to many endangered species, as well as a selection of endemic fauna.
The Milwaukee County Zoo is a zoo in Milwaukee, Wisconsin, operated by the Milwaukee County Parks Commission and is accredited by the Association of Zoos and Aquariums. The zoo averages about 1.3 million visitors a year. The zoo houses 3,100 animals from 350 species and covers an area of 190 acres (77 ha). The zoo is noted for the second birth of polar bears and siamangs in captivity and for their locally famous gorilla Samson, who lived from 1950 to 1981 and whose bones are now on display at the Milwaukee Public Museum. During World War II, a celebrity animal of the zoo was Gertie the Duck and her ducklings. The zoo is also home to one of the largest group of bonobos in one location outside their native Democratic Republic of the Congo, and has two cheetahs from the National Zoo in Washington, DC.
Brandywine Zoo is a small 4.7-acre (1.9 ha) zoo that opened in 1905 in Brandywine Park in Wilmington, Delaware, United States. It is located on the banks of the Brandywine River. The zoo is managed by the Delaware Division of Parks and Recreation and supported by the Delaware Zoological Society. It is usually open daily, 10AM – 4PM, weather permitting.
