U.S. Botanical Gardens
Balboa Park Botanical Building, San Diego, California
Balboa Park is a 1,200-acre (490 ha) urban cultural park in San Diego, California, United States. In addition to open space areas, natural vegetation zones, green belts, gardens, and walking paths, it contains museums, several theaters, and the world-famous San Diego Zoo.
Photo credit: Bernard Gagnon via Wikimedia Commons