"A hideous albatross in the Hudson River Valley."

The first museum in the United States dedicated entirely to posters.

The highest point on the island known for buildings that touch the sky.

Underground vaults of a former brewery beneath Brooklyn's Crown Heights are now used to ripen cheese.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

This neighborhood grocery houses a treasure trove of Eastern European delights.

This lavish room at NYC's French Embassy is a rare relic from the end of the Gilded Age.

Finally, you don't have to be a pious Swedish seaman to relax like one.

An old abandoned mining town in The Adirondacks where Theodore Roosevelt first learned of the shooting of President William McKinley.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

A castle built for love, and abandoned due to heartbreak.

A winding, cliffside stretch of road overlooking the Delaware River.

A massive forgotten storehouse from 1913 on the Brooklyn Waterfront has a spectacular view of Brooklyn.

Come for the pastrami, stay for the million-dollar art.

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

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

There’s a secret bunker inside the Brooklyn Bridge, but the city won’t say where.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

This plot of old-growth forest is the largest surviving remnant of New York City's original woodland.

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

Walk into the 19th century without leaving Brooklyn.

Empty, but not abandoned, this cavernous Brooklyn loading dock was once considered the largest individual building in the world.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground