An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

A priceless collection of the Nation's cryptologic history.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

Remnants of a storybook amusement park hidden behind a strip mall.

Electronic inventions that resulted in products and systems we use every day are on display in this labor-of-love museum.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

This free, take-a-book shop seems like a trick but isn't.

Meet some of the most prominent figures in Black history through life-sized wax models.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.