A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

Outsider art meets paleontology at this roadside reptile repository.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

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

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Shop selling 500 flavors of soda has something for everyone.

Started as a kitchen garden, now the second largest botanical garden in the world.

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

A trash dump made beautiful by nature's power.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

A taste of the macabre Tokyo's ritzy shopping district.

The only theatre in the world constructed specifically for sound movement.

Banksy gives themself artistic license with this piece of London street art.

Hidden beneath the streets of London is a secret subway that only carried mail.

Two stunning 17th-century libraries and a cabinet of curiosities.

A church of bones, decorated with 40,000 human skeletons.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

A semi-scholarly approach to sex.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.