Arlington Cemetery exhibit dedicated to death and grieving.

Inspired by a foil-wrapped potato, (seriously) the Markel Building has been deemed one of the 10 ugliest buildings in the world.

This Great Depression-era creation was once known as the strangest house in the world.

This might just be the TARDIS of bookstores.

A small Richmond island dotted with the remnants of hundreds of years of history.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

Under a playground is a little-known sealed train tunnel that likely contains the bodies of workers trapped by cave-ins.

Once on display alongside a giant Gumby, it’s as tall as a nine-story building when fully extended.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

This grand gothic brewery has been pumping out suds for over a hundred years.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

A museum and doll store featuring a surreal and super sanitized version of where babies come from.

Dental instruments from the illustrious history of American dentistry.

Dedicated to the history of the health sciences.

This simple stone memorial remembers a secret, Geneva Convention-defying interrogation base from WWII.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

This rare basilica nestled right in downtown Asheville is an architectural marvel, inside and out.