This peculiar border irregularity is the only way to legally enter Russia without a visa.

The broken skateboards that became a poignant memorial to a murdered skater.

Abandoned railway line circling the city of Paris.

The world's second-largest excavated hole.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A rotting air force base is now home to rare birds and scarce plants.

This beach runway is off limits during high tide.

This skewed English house has looked like it's going to fall over for centuries.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

A massive underwater sinkhole made famous by Jacques Cousteau.

From bench to vandalism to art, this silly prank seat was funny enough to become permanent.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

Sometimes an island, sometimes a rocky outcropping connected to the world by a tiny suspension bridge.

Built during the Scottish boom in the oil industry, the village was never inhabited.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A subterranean playground in an abandoned slate mine.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

This foolish Victorian sea fort was converted to a deluxe hotel.

Three bridges straddle a stream, one stacked upon the other.

A metal tree emits eerie, melodic notes on top of Lancashire's Crown Point.

London's smallest police station is barely the size of a phone booth.

The longest hedge maze in the world.

Surreal riveted sea forts once protected the Kent shores from German attack.