An abandoned 1920s school with a mysterious history.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

A humble plaque marks the site where the country music legend was found dead in his Cadillac.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

Once home to a booming 19th-century oil town, the park now houses a World War II submarine memorial complete with a torpedo.

In the middle of an abandoned stretch of old Route 50 lies a tombstone that weighs three tons.

One of the few surviving examples of the first lock and dam system built on the Ohio River.

A memorial honoring those who perished in one of the worst construction disasters in U.S. history.

At the center of this cemetery stands a 2,000-year-old burial mound of the Adena culture.

This historic Ohio bridge is adorned with fanciful locks left behind by loving couples.

This abandoned train tunnel has been the subject of countless ghost stories for years.

An out-of-place Air Force radar dome is all that denotes this park as a former missile launch site.

This former Cold War missile control site played an important role in the creation of GPS.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

Explore a traditional Albanian dwelling that pays tribute to the region's rich history.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

A statue representing a lost Roman profession that was vandalized for centuries.

A massive marble foot is tucked away in a small alley near the Pantheon.

Constructed during the 1960s, this bridge is still the highest in Italy.

This statue is the only female representation of Rome's "talking statues."

During World War II, the Shroud of Turin was secreted to this remote southern Italian complex.

The only visible remains of this ancient Greek underground temple is its roof protruding from the earth.

According to tradition this is the oldest church in Venice, but its actual age is a mystery.

Discovered on a shipwreck after more than 400 years, this Renaissance ratter tells a very waggly tale.