This small pedestal marks the spot of the first lot of land sold in Alexandria, Virginia in 1749.

Once the largest trading firm of enslaved people in the U.S., this building is now a museum that preserves Alexandria's dark past.

‘Bush the old fire dog died of poison July 5th, 1869. RIP.’

The "world’s largest honky-tonk" also has its own indoor rodeo arena.

The man who wasn't there.

Belly up to the bar in Cowtown, don't forget to buy some boots.

A Texas museum filled with Broncos and Betties.

Of course the grave of JFK's assassin is surrounded by conspiracy theories.

This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

The first pet cemetery in the United States.

This derelict building used to house infirm Freemasons, their widows, and orphans.

Glacial erratic or man-made dolmen? It probably wasn't druids.

A historic Black graveyard hidden in the parking lot of one of America's largest malls.

This giant rock arrived at this quiet park thousands of years ago on the back of a massive glacier.

Protecting the future of some of the rarest and most misunderstood mammals of North America.

This house was the subject of an Edward Hopper painting, which in turn helped inspire the design of the Bates house in Alfred Hitchcock's 'Psycho.'

Hundreds of numbered stakes hidden in the woods mark the graves of the lost souls of a nearby asylum.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

This abandoned cemetery is crumbling into ruin, exposing the artifacts and bodies buried there.

100 massive sculptures in the Hudson River Valley.

This abandoned factory on the Hudson River once churned out a million bricks a week.

Reclaimed by nature, the ruins of Doodletown, New York are remnants of a town consumed by a state park.

The remains of what was once the world's steepest passenger funicular.