Spreckels Organ Pavilion
An ornate 1914 outdoor pavilion in Balboa Park housing the world's largest outdoor pipe organ, with thousands of pipes. Free concerts are held regularly, most famously on Sunday afternoons, and the structure is a landmark in its own right. Bring a hat and enjoy the open-air seating.
2125 Pan American E Rd, San Diego, CA 92101 (CA, San Diego)

