This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

There must be a pun in this haystack somewhere...

During the 19th century, you could pay for violence off a prix fixe menu on this Manhattan street.

A bit of retro transportation flair preserved in the world's largest department store.

The most confusing clock in New York.

Twice a day one of these tragic bronze mariners drowns with the tide to remember all those the sea has taken.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

The site of the deadly Triangle Shirtwaist Factory Fire.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

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.

Three-story slide through the New Museum.

Rummage through this sunken ship, but leave your scuba gear at home.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

A masterpiece of LGBT art has been restored in what may now be the most valuable restroom in America.

This abandoned subway station can still be seen on regular commuter trips.

Named the fifth most beautiful building in America in 1885, this former courthouse boasts the best view in the Village.

Cryptic messages embedded in the New York City sidewalk.

Plot your trip through the city on the sidewalk.

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

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

The oldest operating apothecary in the US has treated everyone from Thomas Edison to Mark Twain.