Cool Gray City

25,000 years of history in 25 (or so) blocks, with the author of Cool Gray City of Love.

Join best-selling author Gary Kamiya on a rollicking (and stunning) walk through 25,000 years of San Francisco history. As you follow Gary’s path forward in time, you’ll hide from mammoths and walk in the soft footsteps of the area’s first humans.... More

93 minutes
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Transamerica Building

Start your Detour at San Francisco’s tallest tower