1977 photo of the Casa del Prado Theatre in Balboa Park. The theatre is the historic reconstruction of a building from the 1915-16 Panama California Exposition. The original architects were Bertram Goodhue and Carleton Winslow. The theatre seats 640 and the stage is used by the San Diego Civic Youth Ballet, the San Diego Junior Theatre, the country's oldest children's theatre program, and other performing arts groups.