This forgotten chalk mine was reopened thanks to a massive effort from the local community.

Under a church hides a forgotten 13th-century ossuary containing the remains of around 2,500 people.

The museum houses one of the world's largest shoe collections, boasting over 12,000 pairs.

The longest and steepest staircase locks in the United Kingdom.

This ruin in a suburban park may be the place where Shakespeare's "A Midsummer Night's Dream" was first performed.

Macabre symbols of death and mummies on display set the tone of this Italian purgatory church.

A colony of Mexican free-tailed bats live under the bridge and take flight at sundown all summer long.

A lingering bit of Space Race nostalgia lies in the middle of the desert.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

Once the home of a hermetic monk, this cave now houses a small church.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

This building is a recreation of the gatehouse that separated Los Alamos from the outside world during the era of the Manhattan Project.

Secluded springs in the Rio Grande Gorge offer hot bathing beside the haunted ruins of a stagecoach stop.

This ramshackle ghost town is comprised of mining-era buildings collected from around the region.

A rocky outcrop where monks hid their most holy relic while escaping Danish invaders.

This enchanting Victorian estate was home to the world's first hydroelectric power generator.