The Warsaw Zoological Garden, known simply as the Warsaw Zoo, is a scientific zoo located alongside the Vistula River in Warsaw, Poland. Opened in 1928, the zoo covers about 40 hectares in central Warsaw, and sees over 700,000 visitors annually, making it one of the most popular zoos in Poland. It is home to over 11,000 animals representing more than 500 species. The zoo is an accredited member of the European Association of Zoos and Aquaria and the World Association of Zoos and Aquariums.