What is this structure far above the fog clouds? It's Sutro Tower in San Francisco, and we climbed to the top to get to the bottom of its crazy history (did you know there was originally meant to be a restaurant up there?) Visit tinyurl.com/SutroTower to see the full @kqednews video #SanFrancisco #SutroTower #BayArea #fromgreatheights #BayCurious @karlthefog