These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

A private collection of massive steel monsters guarding a Texas pipe works.

This clock is an architectural flourish that stands out as a landmark among a unique Israeli German community.

The most peaceful "country" in the Middle East.

This historic rec center in the heart of Israel is a bastion of peace and togetherness.

A full figure 4th century incorruptible saint lies in a glass coffin in Croatia.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

Decades before the scandal, this staircase on the river was a literal "water gate."

A tribute to Ponce de Leon's supposed quest for eternal youth.

This museum dedicated to an oft-overlooked support industry features a surprisingly moving brass diorama of a man being saved from a sinking car.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

This private residence was the template for one of the most beloved television homes of all time.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

Famously misunderstood wonder of the ancient world