MOST San Francisco Places in SF
Golden Gate Bridge - Not necessarily the most centrally located, compared to some of the other SF classics, but you can't beat the views in terms of quintessential San Francisco.
Union Square - Cable cars? 'Nuff said.
Crissy Field - With views of the bridge, happy city-dwellers barbequing or playing frisbee, and the bay right there, this cannot help but be considered a classic.
Fisherman's Wharf - So overrun with tourists, but so classic. With Ghiradelli Square right there, it's pretty much a double-whammy.
AT&T Park - Between the Giants, the Embarcadero, the views of the Bay and the unique SF architecture nearby, it is hard for me not to consider this dark horse an obvious SF classic.
I KNOW there are plenty more where that came from...