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 Electric Railway Centre City using existing San Diego Trolley tracks. San Diego Metropolitan Transit System, in a partnership with the San Diego historic streetcar society, began select weekday, weekend and holiday mid-day service in August 2011 on this new heritage streetcar Silver Line, which operates around Downtown San Diego using the renovated PCC streetcar #529. By March 2011 San Diego Metropolitan Transit System began work on a study to evaluate the feasibility of reconnecting Balboa Park, the San Diego Zoo, and Downtown San Diego through a fixed-guideway, electrified streetcar line<ref name="MTS City/Park Streetcar Feasibility Study"></ref> that might operate as an extension of