She stares out across six lanes of traffic, clutching a musket and infant with determination.

An architectural oddity hides in plain sight on this iconic London bridge.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

Paris' linguistic guide to the international language of, yes, love.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

This cheese shop also houses a museum devoted to Dutch dairy.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

An abandoned church gets a second life as a massive beer hall and event space.

Meet some of the most prominent figures in Black history through life-sized wax models.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

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

The U.S. Fish Commission’s effort to mass produce carp.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

An overlooked memorial honoring the local Washington residents who died in World War I.

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

A super-sized promotional trick that is now a D.C. landmark.

There’s a hidden military meme engraved on the World War II Memorial.

Parking garage where Bob Woodward met Watergate source "Deep Throat."