One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

Cozy basement bar sports an inventory of over 2,000 beers.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

A whimsical bridge adorned with decorative dragons.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

A crumbling hospital from the 1850s on Roosevelt Island.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Try not to get slimed in Tribeca.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Berlin's old airport.

Avoid gangster interaction while window-shopping.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

One of only two commuter aerial tramways in the United States.

Catacombs turned marketplace.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Breathtaking and huge 430 year old maps of Italy.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

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

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”