A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

This golf ball–shaped former desert real estate office now houses a UFO museum.

Collection of vintage trailers double as hotel rooms.

One of the largest, oldest, darkest, quietest motel rooms in the world.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.

The honor of highest point in Michigan was almost given to the wrong peak before this mountain won out by 11 inches.

Detroit housing collective working to create an "environment for revolutionary change."

Covering 37 subterranean acres, this Armillaria gallic is a famous fungus with its own festival.

This museum remembers an apocalyptic cult that became more famous for baseball than religious radicalism.

A subterranean world of tunnels links several buildings of this rare 19th-century asylum.

The remains of a religious colony, its amusement park, zoo, and baseball empire.

A lavender labyrinth so large it’s visible on Google Earth.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.