Three abandoned missile silos are hiding in plain sight behind a suburban development in Maryland.

The largest cemetery for enslaved people in Loudoun County was almost lost to history, if not for the research of a minister.

The mortal remains of a Russian prince, priest and paranormal investigator who came to America in 1792.

The brainchild of Eleanor Roosevelt, her "Little Village" was a collectivist dream.

Steepest flood safety railway in the entire world.

The ruined remains of a coal mining ghost town are hidden within the woods.

There is beauty and history in the ruins of this former company town.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

A miniature golf course crafted inside the world's largest simulated cave.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This public space is speckled with the eerie remnants of a defunct amusement park.

This tiny museum kept in a B&B laundry room holds the death mask of notorious bank robber Pretty Boy Floyd.

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

A decaying garage hidden amid the dense forest is all that remains of a once-prosperous dairy farm.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

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

Tiny observatory made big contributions to the study of the Earth's motion.

This abandoned Victorian-style house was built in 1884.

This stately 19th century library pushed architectural boundaries at a time when the public library movement was just taking off.