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

Detailed facade of a brownstone in Boerum Hill.

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

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

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

Everyone from Mark Twain to Teddy Roosevelt has a pipe hanging from the walls of this historic chophouse.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

Cheap pizza and all of your naughty bedroom needs housed in a stunning example of Art Nouveau architecture.

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

A town trapped in time - 1958 to be exact.

One of the few remaining American elm trees in New York’s Tompkins Square Park was the birthplace of a new religion.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

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

The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.

The most confusing clock in New York.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

A notorious punk house turned co-op.

Salute the leader of the proletariat.

Historical figures from New York City's Catholic community reside in Midtown.

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

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

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

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