The second oldest continuously operating bar in Louisiana.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Ride the subways of yesteryear.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A semi-scholarly approach to sex.

Elevated freight railway turned wildly successful urban park.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

One part antique store, one part curiosities hodge-podge.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The world's tallest statue of an American hero.

Resting place of the Texas A&M canine mascots, who watch the game from the grave with their own miniature scoreboard.

A modernist landscape of water and sci-fi concrete.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The fairy tale castle of the "fairy-tale king."

The prototype for all Nazi concentration camps.

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

Mountain where Jesus was first tempted by the Devil.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Hear the quietest sound from across the dome.

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

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

The celebrated eyesore created by starry-eyed sweethearts.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.