Ueno Zoo

The oldest zoo in Japan, Ueno Zoo (also known as Ueno Zoological Gardens) was founded in 1882 and built on what was once part of the Imperial estate. It now covers 35.2 acres of land, houses more than 2,600 animals of 464 different species, and displays more animals than any other zoo in the country.
It has also updated its environments for the inhabitants, removing cages and replacing them with more natural-like habitats, such as its Gorilla Woods and Tiger Forest areas.