Terrifically morbid cemetary and site of famous Paracelsus' grave.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

Frida Kahlo's childhood home, now a museum of her life and works.

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

The oldest continuously occupied public building in the United States.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The final resting place of the most famous outlaw in the Old West.

The Grand Canyon of Texas.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

Macabre astrological automaton clock dating to the late 1400s.

A church that bred legends, and served as an inspiration for the Da Vinci Code.