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

Jimi Hendrix's legendary recording studio in Greenwich Village.

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

You can get anything you want at the former site of the restaurant immortalized by Arlo Guthrie.

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

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

A museum of unusual collections, mini-towns, and a half-dog, half-alligator.

Once defending the city of New Orleans from invasion by sea, this fort faces an uncertain future.

The crumbling remains of a 19th century fortess.

Solar powered Spectacle Island features all-green facilities.

On a former island, this old fortification once used to protect the Boston Area and started Edgar Allan Poe in his military career.

This small-town Connecticut restaurant gives each diner a free book from its vast library.

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

This lovely little pond is named after the hundreds of soldiers' corpses that were rolled into the waters during the French-Indian War.

A monument to the military service of America's greatest traitor refuses to even name him.

An unassuming island in the middle of the Hudson that hosts campers, including Aleister Crowley.

Forgotten under the construction of a new urban roadway is a small, abandoned part of town.

The loneliest island in New York.

Unique antiquarian shop specializing in globes, maps, and prints.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A plaque immortalizes the spot where the early American spy said his famous last words: "I only regret that I have but one life to lose for my country."

One man is on a singular quest to name an island after a famous hip-hop artist.