Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This lab's maddening silence is good for business but bad for sanity.

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

A beautiful geyser under environmental threat.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

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

Read a book next to a Midtown waterfall.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Hollowed out cedar log tubs set in an ancient towering forest.

Home of an evil witch famous within southern folklore.

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

A semi-scholarly approach to sex.

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

Venue for strange sideshow displays and musical acts.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

Odd outsider art installations surround a Gold Rush-era ghost town.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A hotel and restaurant serving as the mecca of kitsch.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

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

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.