Balboa Theatre in downtown San Diego's Gaslamp Quarter opened on March 28, 1924, as a 1,513-seat vaudeville and movie palace designed by architect William H. Wheeler in Spanish Colonial Revival and Moorish styles. A $26.5 million restoration completed in 2008 returned the National Register of Historic Places-listed building to active use as a 1,229-seat performing arts venue — joining Spreckels Theatre as one of two pre-war proscenium houses still operating in the Gaslamp. The restored interior preserves Wheeler's original ornamental niches, gilded ceiling fretwork, and the signature 28-foot waterfalls flanking the proscenium arch, which flow at full force during intermissions exactly as they did in 1924. A 2009 installation of a 1929 Wonder Morton organ — one of only four such instruments worldwide — gives the theater a dedicated silent-film accompaniment capability that no other San Diego venue, including the larger San Diego Civic Theatre, can replicate. Managed by the nonprofit San Diego Theatres, the five-story building hosts touring Broadway productions, the Mainly Mozart Festival, full-orchestra concerts, and multi-day cultural festivals on a stage originally dimensioned to Broadway specifications.