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

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

An unassuming secret door once led to a legendary watering hole.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

This old-fashioned candy shop, ice cream parlor, and diner served as the setting for one of TV's most controversial series finales.

Take a step into the workshop where Edison and his employees revolutionized the world.

The drawbridge used in the filming of the movie 'Annie' has been in the open position as it was in the movie for decades.

Sniff the Titan Arum's rotting flesh.

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

The "Seinfeld" diner.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

Try not to get slimed in Tribeca.

The world's oldest bookshop still in operation.

A beloved, quirky little fountain featuring a large frog spitting water at a naked boy.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Go inside to really appreciate this 500-year-old technological masterpiece.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Wander among the abandoned ruins of this once-powerful medieval town.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.