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

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

An odd, ancient window that may have once been part of a brutal prison is embedded in the side of New York's Police Plaza.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

The best place in New York to pick up the controversial, notoriously foul-smelling Asian "king of fruits."

Revolutionary War casualties fill the only 17th century structure remaining in Manhattan.

The Belgian library displays burned books that were salvaged from the fires of both world wars.

A whimsical bridge uses saxophones to pay tribute to two great men and the European Union.

This modern arts center is built around a gem of late-Baroque architecture.

A fascinating and enormous collection of natural history exhibits stained by a dark colonial legacy.

Dummies recreate radiological discoveries from history.

When you're a great Russian Tsar, even your vomit gets a statue.

A garden of flying flowers.

A taxus-tree to which Julius Caesar reputedly tied his horse.

The world's tallest boat lift stands as a massive piece of industrial tourism.

Descend into the tunnels to experience the life of a coal miner.

The highest point in Belgium is a staircase to nowhere.

A fantastical bed and breakfast with magically unique rooms.

This former coal mine, now a fascinating museum, was the site of Belgium's worst mining disaster.

This historic recreationist school churns out warriors that may very well have had a fighting chance in Rome's pits of the day.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.