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) The festival "December Nights" (originally called "Christmas on the Prado") takes place in Balboa Park on the first full weekend in December each year. EarthFair, described as one of the largest free annual environmental fairs in the U.S., is held in the park every April. The event celebrates Earth Day, and includes a parade, musical performances, children's area, international food, exhibit booths and information on various topics related to the environment. In 2010, over 70,000 people attended the fair. The two-day San Diego Pride Festival is held in the Marston Point area of Balboa Park each July; the 2011 event