Piercing the city's skyline like pharaoh's pyramid on a crash diet, the Transamerica Building is primarily a visual landmark, although there is little park with greenery at ground zero.
During the winter months, the building sports a light on top that claims to be the largest single filament bulb in the world.
Address: 600 Montgomery St, SF, CA
Wikipedia: http://en.wikipedia.org/wiki/Transamerica_Pyramid