At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

A second generation sun-powered marvel lights up the night.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

The real-life site of Ichabod Crane's infamous gourd attack.

This fancifully decorated Victorian home in New York’s Hudson Valley is the only known fully domed octagonal residence in the United States.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

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.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Said to be haunted, this tower was constructed by a sugar importer as a gift to his wife.

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

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

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

This crumbling little graveyard was saved from the undergrowth by concerned veterans.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

The site of a tragic massacre that spawned a multimedia franchise.

This 19th-century Hamptons windmill was once home to modernist painter Agnes Pelton.

This cemetery holds the remains of an accused witch and the man that ensured her freedom.