Cold War missile launch site which has been converted to a public park.

A former atom smasher turned into an art gallery.

This overgrown Illinois water park offers a whole new type of adventure.

One of the finest examples of a black soil prairie that was barely saved by the Great Depression.

A source of civic pride, though the reason for its construction is unknown.

What may be America's largest classic video game arcade lurks inconspicuously in a Chicago suburb.

The final resting place of the world's first nuclear reactor.

This building is a recreation of the gatehouse that separated Los Alamos from the outside world during the era of the Manhattan Project.

The highest peak in the Jemez Mountains and the traditional center of the Pueblo world.

The building stands within a quiet, postcard-perfect New Mexico village.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

The largest land animal skull ever discovered.

A historical house furnished with authentic pieces from the Victorian period.

A rare memento of a lost Indigenous group.

These structures were inspired by both Native American shelters as well as, strangely, an ice cream shop.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

Abandoned Air Force base that has fallen into disrepair.

A castle built by an eccentric medieval enthusiast in suburban Ohio.

The former broadcast site has been reimagined as a museum about the medium.

Built around 1845, this house was occupied for 100 years, serving as a home to a prosecuting attorney, a Union Civil War general, and a wealthy socialite.

An abandoned munitions factory with a shot tower continues to wage war on the surrounding environment.

Now in disrepair, this 19th century station was a stop on of the famed B&O Railroad.

An underwater road considered a possible Atlantis location.

Former utopian colony based on the belief that the universe exists in a hollow sphere.