The stone sculpture of an Ottoman soldier is an homage to a lost Providence landmark.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

From horses to stainless-steel trucks, this iconic Providence burger wagon is one of the oldest mobile diners in the country.

Rumors of the occult haunt this upscale 1920s hotel.

The headquarters of the famous Yale society.

These caves are home to a small church and were used to age cheese.

Designed to resemble foreign architecture, this mosque-looking structure was used to pump water to a royal fountain.

The "Prussian Versailles" that is as glorious today as when it was built.

A Nazi concentration camp and Anne Frank's place of death.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

One of the most easily accessible examples of the rare 1960s UFO houses.

A subterranean display of public art and architecture.

The prototype for all Nazi concentration camps.

The fairy tale castle of the "fairy-tale king."

The final resting place of the author who gave us the Little Mermaid, the Ugly Duckling, and many more beloved fairy tales.

Copenhagen's celebrated theme park and gardens.

The final resting place of one of the brightest physicists of the 20th century.

Lumps of significant stone from around the world surround a flaming monument for peace.

A magical oasis in the middle of the Negev Desert.

The Dead Sea Scrolls were discovered in the ruins of this ancient monastic community.

Built by a king and rebuilt by an emperor, this aqueduct transported water for 1,200 years to this ancient Mediterranean hub.

The family compound and final resting place for the philosopher, Confucius, and over 100,000 of his descendants.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.