This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

Fascinating museum dedicated to the under-appreciated medical history of urology features some wince-inducing devices.

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

The shelves in the back of this thrift store are devoted to saving, not selling, retro tech.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

A model home in the Medical Examiner's Office in which grisly death scenes are staged to train forensic investigators.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

This abandoned sea fort has become an accidental bird sanctuary.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

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

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

An eerie, decaying ghost town destined to fade into the forest.

This Maryland farm is known for its amazing corn mazes and its 30-foot junkbots.

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

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

A priceless collection of the Nation's cryptologic history.

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

An astounding collection of medical specimens, including bits of President Lincoln.

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