Ireland's only German military cemetery holds the remains of a spy who was moved there under the cover of darkness.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

A prized globe signed by Amelia Earhart and Charles Lindbergh sits in the Brooklyn office of the American Geographical Society.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

This little museum is built on a theater that was once a wildly elaborate speakeasy.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

Located at the former Lorton Prison the Lucy Burns Museum tells the story of the 91 year history of the prison including the dark chapter of its involvement in the women's suffrage movement.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

This salad has two key ingredients: hearts of palm and green ice cream.

The bartenders at this crime-fighting theme cafe are actual private detectives by day.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

An impressive collection is dedicated to the legendary beast.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

A circle of stones on a hilltop in Peru’s high jungle, aligned with the winter solstice and largely ignored by archaeologists.

Locals transformed this Canadian evergreen into a secret hangout with spectacular views of Vancouver's skyline.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Half of a waterfall goes into the river while the other half seems to disappear.

The house where John Wilkes Booth conspired with his co-conspirators.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

The notorious couple camped at this site after a bloody shootout with police.