The most confusing clock in New York.

Commemorating the spot where the famous scientist fed his pigeons.

The competition: breathe deeply as long as you can.

New York City's only radical feminist independent bookstore.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

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

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

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

World's first "penitentiary," meant to be humane, drove men insane.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Beautiful mosaics cover the first stations opened on New York City's newest subway line.

Home to first responders to Greenpoint's devastating oil fires.

Once called Winthrop Park in 1889, home to a decidedly sexy tribute to the Monitor vs. Merrimac battle.

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

Two stone columns flank the grand Venice square, but there were supposed to be three.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.

Ancient snack bar of the Roman Empire re-opened.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The glowing blue Nymphaeum of Emperor Tiberius.

This nearly invisible wire transforms much of the city into one big, symbolic home on the holy day.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.