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

A miniature rainforest is growing inside of a Midtown Manhattan office building.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

A Manhattan Episcopal church with an eerie underground crypt.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

The famous author's cottage hideaway.

Manhattan and the Bronx have been playing tug-of-war over this former island neighborhood for more than a century.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

The first "Hall of Fame" in America was designed by legendary Gilded Age architect Stanford White for what was then the NYU uptown campus.

A graffiti Mecca welcoming artists from around the world.

A self-made museum in Queens, New York continues to display the work of a sculptor known for paving his own way.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Macabre astrological automaton clock dating to the late 1400s.

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

The patron saint of spinsters grasps a container of dried blood.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

A church of bones, decorated with 40,000 human skeletons.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

Read a book next to a Midtown waterfall.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The site of the climactic scene from the classic horror film is now a historic landmark.

At 207 feet, one of the world's longest continuous escalators.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.