A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Art and a pun, all in one.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

A layered tribute to the work of mosaicist Isaiah Zagar.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

A rare view of a preserved Victorian science museum.

Make a tough dinner decision: Octopus wasabi roulette or bull penis?

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

A sculptural commentary on capitalism pokes up from the East River.

The only surviving sidewalk clock in Brooklyn.

A drawbridge named for a potentially intersex Polish national who fought alongside George Washington during the American Revolution, and an example of "Pulaski Red".

The most radioactive spot in New York City can also fix your muffler.

Holding the most bodies of any cemetery in the United States.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

A popular European tradition makes its way to the states on one of America's most famous bridges.

A semi-scholarly approach to sex.

The factory for the popular Dumbo location, the Greenpoint shop is a quiet gem.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.