This architectural onion has an original 1930's Jerry O'Mahony dining car at its core.

Hidden in plain sight on the Hudson River is an abandoned train station where nature has taken over.

This haunting monument honors the victims of 9/11.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Lumps of significant stone from around the world surround a flaming monument for peace.

In 1927, a biplane disappeared while attempting to complete the first non-stop transatlantic flight between Paris and New York City. This memorial stands at the last place it was seen.

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

This historic stone gate tower is now just a lonely relic in the middle of a swamp.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

This legendary urban waterfall creates a dazzling display of rainbows.

This black shoreline is made up of exploded lava particles.

A pixel art killer whale is frozen mid-leap in this Vancouver square.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

A wall of chewing gum moonlights as collective art.

Possibly the world's largest coin stands just outside of a Canadian science center.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Museum dedicated to awful artwork.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.

Two large-scale sculptures of Adam and Eve greet visitors in the nude at the Time Warner Center in NYC.

A hidden "place of interment for gentlemen."

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

One of the oldest medical collections in Europe focusing on rare surgical instruments.

The celebrated eyesore created by starry-eyed sweethearts.