The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The trials and tribulations of marking Poe's grave.

An abandoned stretch of highway, deteriorating next to the operational one.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Mysterious rocks that ring musically when struck.

A toxic ghost town sitting atop a massive coal fire.

World's first "penitentiary," meant to be humane, drove men insane.

This tiny structure was built by the creator of the Brooklyn Bridge.

These old doors are covered in the signatures of Rehoboth Beach artists dating back to the 1930s.

This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

The historic home still shows the scars from a little run-in with the British in 1813.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

This memorial pyramid marker honors one of the United States Government's first official camel riders.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.

Stairs often replace streets on the steep slopes of this old mining town.

A Wild West jailhouse that slid down the mountainside.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.