World's first "penitentiary," meant to be humane, drove men insane.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

Rippling sand dunes frozen in the Arizona rock.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Rare moles meet activism at this Oaxacan eatery.

A psychedelic tribute to one of Georgia's most unique artistic visionaries, out of place and time in the heart of Atlanta.

This Toronto garden collects stares and tchotchkes in equal measure.

In the back of a nondescript sports bar is a museum-worthy mural by legendary cartoonists.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.