A wall of chewing gum moonlights as collective art.

The strange phenomenon causing gravity to "work backwards" on this hill has been blamed on the paranormal.

A stunning landscape of bunkers that once stored chemical weapons.

An obscure waterfall that looks like something out of a fantasy novel.

This trail leads to a mine that was used as a sanctuary during the Great Fire of 1910.

After this former brothel closed, its interior remained almost frozen in time.

The mayor made the declaration in 2004.

A black cottonwood gets a second life as a home for books.

A wild west land agreement was etched right onto this historic Idaho stone.

Protected from the elements, these Native American rock paintings have survived approximately 250 years.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

This playground sculpture of an icon from the past is dedicated to the children of the future.

A giant milk bottle from the 1930s beckons drivers to this diner.

The decorations were inspired by an unlikely missing treasure.

Local legend has it that an old, decaying staircase outside this cemetery is haunted by dozens of ghosts.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Five acres of divinely inspired folk art.

Eternal resting place of the grave robber and murderer who served as inspiration for many of cinema’s famous madmen.

All that remains of the fishing-vessel-turned-warship is its weathered hull.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.