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
Balboa Park (San Diego) troops were using the park for training. Coinciding with the Panama–California Exposition, the Commandant of the Marine Corps instructed 2nd Battalion of the newly established 4th Marines to represent the Marine Corps at the event. On December 19, 1914, Marine Barracks, Balboa Park, was established as the second, and during its period, and only Marine base in San Diego. It was established by Marines under the command of Colonel Pendleton. It remained in place until 1921, when a more permanent base was established in Dutch Flats, itself a predecessor of Marine Corps Recruit Depot, San Diego. Under the conditions of