European castle ruins in an American state park are actually the product of death and grief.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

Nature's biggest mammal swims in landlocked Oklahoma.

When you can afford only half a road, you build only half a road.

The modest childhood home where the baseball legend and Yankees star learned to hit from both sides of the plate.

A marvel of Byzantine engineering under the streets of Istanbul.

Vibrant street art created with mixed media.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This small chapel is built of human bones and decorated with a golden skeleton.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

A black and white solution to the Bolivian city's traffic problems.

The soaring gondola lines form the longest aerial cable car system in the world.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

Bolivia's needle-like rock formations.