This subterranean oyster house has been the pearl of Grand Central Station since 1913.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Cryptic messages embedded in the New York City sidewalk.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

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

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

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

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

The "Seinfeld" diner.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

A terrific purveyor of natural history objects and curios.

Single runway interrupted by a busy road that cuts across its middle.

Constructed on the ruins of a convent, this tower saved countless lives.

An island graveyard with spectacular views of the Caribbean.

10,000 flowered plants bloom in the City of Roses.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.