FREE things to do in SAN FRANCISCO, Part 5! Discover the Wave Organ in SF's Marina District! 🎶 A hidden gem from the 1980s where you can hear unique wave sounds amplified through concrete pipes. Best experienced at high tide, but there's always something to hear! Dress warm and search "Wave Organ" on Google Maps to find it. Stay tuned for Part 6! #sanfrancisco #sanfranciscoworld #citybythebay #onlyinsf#ilovesf #sfbucketlist #howsfseessf