Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.

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

This slender three-story building has also had several famous residents.

Phil Mortillaro uses keys to bring art back to the Village.

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

Hidden behind a gate in Greenwich Village is a little farmhouse that once served as the writing studio of a bestselling author.

New York's unstoppable progress turned this cemetery into the smallest burial ground in the city.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

The most confusing clock in New York.

The lesser-known Alice sculpture of Central Park dedicated to the “godmother of American children.”

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

These historic buildings once housed the headquarters of one of the most infamous gangs of New York.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

Hidden in one of New York's oldest subway stations is the final remnant of the site of the bizarre Shakespeare Riots.

The site of the deadly Triangle Shirtwaist Factory Fire.

A trove of century-old litho stones from the Puck Building's printing days were discovered behind a cellar wall, and are now hanging in the store.

While it now takes more than a dime to open an account this historic Brooklyn bank still displays the opulence of the gilded age in which it was built.

As telephones become more essential and less stylish one historic Brooklyn building remembers the days when they were a grand celebration of communication.

One of the deadliest American air disasters is nearly forgotten in Brooklyn.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

The site of a fallen tree that protected Americans from British forces during the American Revolution.

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

A tree that grows parallel to the ground was declared Brooklyn's "crowning curio" by the poet who saved it.

This elaborate tunnel is the first structure composed of cast concrete in the United States.