One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

When Motown musicians came to Nashville in the 1960s they stayed at this historic record-pressing company because hotels wouldn't host them.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.

Eighteen miniature death-scene dioramas.

This award-winning men's bathroom was just too beautiful to not allow women to see.

Enormous lake at the bottom of a unique cave system.

This structure among the trees was the result of divine inspiration.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

One of the world's oldest universities houses an incredible collection of anatomical models, mummified body parts, and human bones.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Possible relics of the ancient Roman city are hidden in this restaurant's façade.

Unrepaired walls from a 1920 anarchist bomb attack.

Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

The world's largest woodcarving collection includes dozens of Bible scenes and a wooden bestiary, all carved by one man.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

Los Angeles's oldest cemetery allows visitors to trace the history of this proud city.

Small museum packed with artifacts recovered by the man rumored to be the real-life inspiration for Indiana Jones.

Historic funicular railway, believed to be the shortest railroad in the world.

The private clubhouse for the members of the Academy of Magical Arts.

Historic marionette theater features thousands of handmade puppets and free cups of ice cream.

Panorama exhibition hall in old silent theater with a beautiful backyard garden.

Gift shop offering toe tags and chalk body beach towels tucked into a coroner's office.

The legendary building that needed ghostly approval before being built.