Walking on your hands might garner attention, but may also result in thumb blisters from ill-fitting loafers. Let your legs do the work with today's Groupon: for $18, you get a 2.5-hour historical walking tour from Cruisin' the Castro Tours (up to a $35 value). Tours begin at the rainbow flagpole at the corner of Castro and Market Streets on Mondays, Tuesdays, Thursdays, Fridays, and Saturdays at 10:00 a.m.

Kathy Amendola’s Historical Tours introduce the Castro-curious to the culturally diverse community at the headwaters of the gay rights movement. The guided amble traces the neighborhood's rich history and evolving cultural landscape, from the Gold Rush era and the days before Internet was first pumped from Silicon Valley’s fertile bedrock to the heyday of Harvey Milk. The walkabout wends its way through the Harvey Milk Plaza, the original site of the AIDS Quilt Names Project, and Pink Triangle Memorial Park, among other significant landmarks. Tours on Thursday, Friday, and Saturday include admission to the GLBT History Museum (a $5 value). Flatlanders will appreciate this nonhill tour, which is also completely wheelchair accessible.