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.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Historic medieval fortified city in southwest France.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The world's only official college program focused on "clown therapy."

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

New Orleans' famous cemetery, located on the site of a former race track.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The world's most active stratovolcano is almost always erupting.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

A traditional U-Bahn station in Berlin gets a string of rather untraditional benches.

This TV tower once secretly housed a GDR intelligence team.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

This Rhode Island mansion was a stand-in for the exteriors of Collinwood in the original "Dark Shadows" series.

A 60-room castle constructed by a horse-racing heir.

Decades before the scandal, this staircase on the river was a literal "water gate."

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.