Given to San Diego citizens in 1914 by brothers John D. and Adolph Spreckels, the ornate, curved pavilion houses a magnificent organ with over 4,500 individual pipes. They range in length from less than a half-inch to more than 32 feet. With only brief interruptions, the organ has been in continuous use in the park, and today visitors can enjoy free hour-long concerts on Sundays at 2pm. There's seating for 2,400.