Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

A sharp sculpture made of thousands of pieces of jagged glass.

Large collection from the 3rd millennium BCE.

A statue in the Texas town that proudly calls itself the killer bee capital of the world.

This historic national park is covered in the stunning ruins of red rock pueblos.

A self-built castle made by a mysterious man.

The burial ground of two kings and a queen is now a calm city park in the middle of bustling Seoul.

This pagoda was once the central feature of a Buddhist temple that no longer exists.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Hidden behind Lincoln's head is a chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

Calidum et Deliciose Succosum!

Thanks to a loophole in property ownership, this alleyway has become a cacophonous street gallery.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

Every president in history is immortalized in bronze in downtown Rapid City.

These otherworldly limestone formations jut out from the Kansas prairie.

The summer home of the largest colony of bats in the world.

Texas's oldest bakery serves authentic German pastries, including legendary strudel.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

A famed artist's inspiring work of peace and tolerance.

An intricate and amazing house built by architect Karl Junker.