The Honolulu Zoo is a 42-acre (17 ha) zoo in Queen Kapiʻolani Park in Honolulu, Hawaiʻi, US. It is the only zoo in the United States to be established by grants made by a sovereign monarch and is built on part of the 300-acre (121 ha) royal Queen Kapiʻolani Park. The Honolulu Zoo features over 1,230 animals in specially designed habitats.