When it came to designing his own small office building, the eccentric architect wasn't afraid to show the world what he could do.

It was meant to help transport wounded soldiers to a secret underground hospital.

A book bound in the skin of an infamous criminal, along with countless other specimens.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

A short hike into the mountainside forest reveals a decaying 1890s town.

Odd outsider art installations surround a Gold Rush-era ghost town.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

This dilapidated castle-like structure overlooks the Hudson River at one of its widest points and was once home to nuns.

If all members were present at the table, a sixth of the world's wealth would be under the same roof.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

A museum dedicated to exhibiting remarkable outsider art.

This southwestern historic site was designed and built by an artist who wanted his work to "feel at home."

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

The oldest university museum west of the Mississippi retains its 19th century feel.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

One tiny triangular park commemorates the victims of a yellow fever epidemic—many of whom are buried right below the grass.

The maritime museum that boasts the largest nautical library in the western hemisphere.

This old-fashioned carhop restaurant gave the world the waffle cone.

This statue is dedicated to Grace Sherwood, the last person in Virginia to be convicted of being a witch.

America's first public mental health facility.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.