Macabre astrological automaton clock dating to the late 1400s.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

The hidden lair of an alchemist rediscovered in a 2002 flood.

An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

A clear blue swimming hole with hidden caves, still unexplored.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Legends surround this jagged rock formation in the New Mexico desert.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

A warm desert spring holds one of the rarest species on earth.

Giant origami sculptures tucked into desert scenery beckon passers-by to explore further.

A famous flea market artist's studio that's full of odds and ends.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A haunting tribute to pioneering photographer Clover Adams.

A computer bug so primitive it was an actual insect.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.