2300 Steele St
Denver, Denver County, Colorado, 80205
The Denver Zoo is an 80-acre (32 ha) facility located in City Park of Denver, Colorado, United States. Founded in 1896, it is owned by the City and County of Denver and funded in part by the Scientific and Cultural Facilities District (SCFD).
The Denver Zoo was started with the donation of an orphaned American black bear. With the construction of Bear Mountain, it became the first zoo in the United States to use naturalistic zoo enclosures rather than cages with bars.
The Denver Zoo is accredited by the (American) Association of Zoos and Aquariums (AZA) and is also a member of the World Association of Zoos and Aquariums (WAZA). The zoo achieved ISO 14001 certification in 2009, was given the first AZA Green Award in 2011, and was named the "Greenest Zoo in the Country" at the World Renewable Energy Forum in 2012. In 2015, it was re-certified for ISO 14001 and achieved OHSAS 18001 certification, becoming only the fourth zoo in the world to get both certifications.
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