The oldest surviving synagogue in New York City is now a soaring art space.

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

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

A celebration of capitalism in Midtown.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

The "Seinfeld" diner.

Mysterious 500-year-old tapestries depict a unicorn hunt.

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

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

New York City's smallest piece of private property.

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

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

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A dilapidated dock tells the story of Titanic's missed arrival.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A crumbling hospital from the 1850s on Roosevelt Island.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

This small city park is best known for the nightly convergence of thousands of shrieking parakeets.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

This tiny shop has been serving traditional tamales for more than 200 years.

Cathedral carved out of salt, located a mile below the earth's surface.