This abandoned Greek island was the last active leper colony in Europe.

Descendants of this colonial Pennsylvania family still travel from far and wide to visit the 300-year-old home of their Quaker ancestors.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

The island residents are known for taking their quirky sense of humor with them to the grave.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

Visiting dignitaries and Hollywood stars once stayed at this 1920s hotel, alongside ghosts that are said to haunt its corridors.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

Scientists use one of the saltiest bodies of water on Earth as a terrestrial base for studying water on Mars.

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

The attic and basement house two museums stuffed with oddities like swallowed spoon handles and a shrunken head.

The remains of a doomed Antarctic plane, buried beneath layers of ice and snow, await those willing to do a bit of digging.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Locals say the stone that marks the spot where the gallows once stood can lead you astray.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

The abandoned ruins of America's first private zoo are open for exploration in the Catskills.

This massive swimming pool is the high tech home to the human-powered submarine races.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

A network of hundreds of interconnected wineries in caves hides under the town center.

The naval commander’s proudest moment in battle is memorialized in this unique tomb at Arlington Cemetery.

The rogue roots are gradually consuming some of the historic marble grave markers.

The mighty room where the poet spent most of her life is available to rent for an hour or two.

The national park was once a plantation estate.