Church featuring "high Victorian gothic" architecture.

2 square block factory in Greenpoint erected in 1936.

Where one of Greenpoint's "five black arts" was practiced.

Neoclassical bank designed by NY architects Helmle & Huberty.

Where Greenpoint's first European settler—and troublemaker—made his home.

Where the Monitor was launched and ushered in the age of the "ironclads."

Once a flowing stream and where the USS Monitor, the world's first ironclad, was built and launched.

Historic Greenpoint theater, turned roller disco, now housing a chain pharmacy store.

The only surviving sidewalk clock in Brooklyn.

Home to first responders to Greenpoint's devastating oil fires.

A 120-year oil leak slowly unleashes more gallons of oil than the Exxon/Mobil disaster.

Once called Winthrop Park in 1889, home to a decidedly sexy tribute to the Monitor vs. Merrimac battle.

A no-frills cinephile haven known for showing offbeat, underseen films.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

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

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

Visit the monolithic tomb of America's most famous general.

A Manhattan Episcopal church with an eerie underground crypt.

The legendary court where emerging basketball players gain their street cred.

A crumbling staircase in upper Manhattan is all that remains of one of the most important sites in sports history.

The oldest house in Manhattan is now a museum that remembers the home's sordid history of scandals, vice-presidents, and ghosts.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

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

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.