A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

A strange house built only at night, with rumored mystic inspiration.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

Its buzzing collection honors vibrator history.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The first declared National Monument in the United States.

A hip bar decorated with walls of golden skulls.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Towering basalt columns, a creation of fire and ice.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Macabre astrological automaton clock dating to the late 1400s.

The atmospheric road was never meant to be so creepy.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

Stroll through a wonderland of stupendous moss-covered trees.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

A semi-scholarly approach to sex.