I went on an optional Saturday "cultural" field trip to SF's North Beach in the late 60s
when 15 or 16 of age. I attended a then quite liberal coeducational boarding school near San Francisco in the 2nd and 3rd year of its existence 68-70.
Stops included Cafe Trieste (opera and capacino), City Lights Bookstore (where Ferlinghetti read us poetry), the Condor Club (where Carol Doda talked to us and gave us a glimpse of her show http://en.wikipedia.org/wiki/Carol_Doda), Finnochio's (http://queermusicheritage.us/oct2002f.html), Anton Levay's Church of Satan store (Antron present to talk to us), Coit Tower, Enrico's Club, a Cathederal (that the name slips my memory), and dinner at the Old Spaghetti Factory. We were at The Condor and Finnochio's early in the day when they were not open for business and got private visits and shows.
I only went to two other nudie bars in my life, both when I was 19 on my epic backpack, thumb, and Greyhound from California to Florida to to DC to New York to Seattle and points between then home: I went to a nudie bar in New Orleans during Mardi Gras and one in Nashville when I went to the pre-Opreyland Grand Old Opera. Never again and I am in my 60s now.