A graffiti Mecca welcoming artists from around the world.

An accidentally hidden library containing the ephemeral history of New York.

Reverend Jen's unique museum/living room showcases her troll collection.

Walk over a 150 year old manhole.

Tucked in the back of this amazing antique store is an important piece of medical history.

You must take the A train... to the last active cemetery in Manhattan.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

One of the only single-person private gravesites in New York City.

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

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

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

Little Red Lighthouse under the George Washington Bridge.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

Salute the leader of the proletariat.

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

Unrepaired walls from a 1920 anarchist bomb attack.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.

A whimsical, but often overlooked clock in Park Avenue.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

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

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

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”