They say the Houston Zoo is a 55-acre zoological ...

They say the Houston Zoo is a 55-acre zoological park located within Hermann Park in Houston, Texas, United States. The zoo claims to house over 6,000 animals from 900 species. It is said to receives 2.55 million visitors each year and is the second most visited zoo in the United States. It is accredited by the Association of Zoos and Aquariums (AZA).