New York City's Summer Streets 2012 (SLIDE SHOW)

If don't have Spidey's web-slinging powers—and don't feel like subjecting yourself to a bite from a radioactive arachnid—consider swinging down a zip line or scaling climbing walls at this year's Summer Streets. The annual event, which runs on three consecutive Saturdays in August, shuts down traffic so that you can walk, bike, climb, glide or just admire the view without any pesky cars getting in the way.

RECOMMENDED: Guide to Summer Streets