This city bans cars every Sunday—and people love it

Spurred by environmental concerns, an experiment in Bogotá, Colombia, is spreading worldwide.

A little over 75 miles of Bogotá's roadway are turned over each Sunday to the Ciclovía, and as many as one-and-a-half million Bogotanos come out to bike or ride.
Photograph by Juan Cristóbal Cobo, National Geographic

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