Balboa Park (San Diego) an outdoor amphitheatre. The Casa Del Prado Theater is the home of San Diego Junior Theatre, the country's oldest children's theatre program. The House of Pacific Relations International Cottages collected on El Prado offer free entertainment shows. The Botanical Building, designed by Carleton Winslow, was the largest wood lath structure in the world when it was built in 1915 for the Panama-California Exposition. It contains large specimen palms and other plants and sits next to a long reflecting pool on the El Prado side. Located in the eastern third of the park is the Morley Field Sports Complex, which includes
San Diego Zoo animal grottos and later in 1926, the Spanish Revival-style research hospital, for which Gill received an Honor Award from the San Diego Chapter of the American Institute of Architects. Gill also designed a bird cage at the zoo in 1937, then the largest bird cage in the world. The San Diego Zoo has received numerous awards for its exhibits, programs, and reproduction and conservation efforts. This list includes only awards given to the Zoo specifically, not to its parent organization; for those, see San Diego Zoo Global#Awards. San Diego Zoo The San Diego Zoo is a zoo in Balboa Park,