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The Pearl Street Mall in downtown Boulder, Colorado, seen here in 2004, opened in 1977. It is one of a handful of car-free projects from that decade that are still going strong.
Photographer: Glenn Asakawa/Denver Post via Getty Images
CityLab
Design
Lessons From the Rise and Fall of the Pedestrian Mall
Car-free shopping streets swept many U.S. cities in the 1960s and ’70s, but few examples survived. Those that did could be models for today’s “open streets.”