America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.

One of the last full-orchestra recording studios in New York City and an acoustical marvel.

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.

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

An artist's cute bronze subway sculptures belie his violent artistic past.

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

The first and only carousel with a lineup entirely of insects.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

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

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

The famous author's cottage hideaway.

Though its celestial ceiling is impressive, the true star is the vast collection of French books.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

Just your average Marie Antoinette–themed speakeasy in an abandoned 19th-century subway tunnel.

This ruined fort hidden at the top of Central Park can't seem to keep from losing its historical plaques.

One of the last Jazz Age "Wonder Theaters" in New York City.

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

A celebration of capitalism in Midtown.

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

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.

Ride the subways of yesteryear.