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) of the Panama Canal. Davidson believed an expo would help improve commerce (it would advertise that San Diego was the first U.S. port of call vessels encountered after passing through the canal and sailing north), build the city's population, and expand the infrastructure of the park. He later explained the significance of holding the expo in San Diego: After a 1910 contest to rename City Park, the park was named after Vasco Núñez de Balboa, the first European to cross Central America and see the Pacific Ocean. San Diego would be the smallest city to ever hold a World's Fair;