Ever since a wily surveyor carved its wide, diagonal path through the center of town more than 150 years ago, Market Street has vexed San Francisco. It's the place where each generation tries to scrap the past and build the city of its dreams.

On this Detour, you’ll page through antique maps, walk a slice of Paris by the Bay, descend below street level, and reemerge to see why Market Street is like no other street in the world. Above all, you’ll see city planning through new eyes and understand how the city works like never before.