These ruins are all that's left of the former Alabama State Capitol.

A collection of huge Pre-Colombian structures in Alabama.

The remains of a foundry and old blast furnaces destroyed during the Civil War are preserved in this central Alabama park.

A rusted metal giant pays tribute to Birmingham’s industrial past.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

A giant scrap metal troll rests his hands on top of a dilapidated building covered in graffiti.

"Gnome Chomsky" was once the largest gnome in the world, but is now simply tall for his kind.

A unique sculpture designed to raise stroke awareness.

The lasting remains of the region's once booming cement industry.

Come for the history lesson, stay for the mule-pulled boat rides.

Dedicated to one of the most successful boxers to compete in the heavyweight division.

The remains of a century-old mansion that met a fiery demise years after it was deserted.

Oldest existing wire suspension bridge in the United States.

Whimsical artist house in the New Jersey woods.

One of the U.S. Forest Service's only mansions is outfitted with a dinner table for floating food.

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

A pair of 19th-century granite markers symbolically record where the state boundaries of New York, New Jersey, and Pennsylvania intersect.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

This stone bridge is all that remains of a submerged New Jersey town.

This tower was once used to create ammunition for early settlers.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.

Once one of the largest producers of pig iron in the world.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.