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

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

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

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

NYC's legendary underground network for bovine transportation.

Home on the Hillside, and home of the first breakfast cereal.

This mouldering abandoned mental hospital was once a center for progressive healing.

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

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

Nikola Tesla's former home contains an homage hidden from plain sight.

A ruined mansion hidden in the woods of the Hudson Valley, home of a tragically doomed romance.

A whimsical, but often overlooked clock in Park Avenue.

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

Unrepaired walls from a 1920 anarchist bomb attack.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

The oldest living tree in Manhattan comes shrouded in sinister legend.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

The remains of a chapel created for convenience.

A sculptor's dream castle turned fantastical ruin.

This structure among the trees was the result of divine inspiration.

Live long and prosper in Tennessee.

An amazing collection of scale model ships.