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

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

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

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

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

This abandoned sea fort has become an accidental bird sanctuary.

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

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

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

Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

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

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

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

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

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

A hidden alley in urban Baltimore is a haven for graffiti artists.

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

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

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

The land is home to swimming ponies and a legendary 18th-century treasure.

A priceless collection of the Nation's cryptologic history.

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

A museum dedicated to exhibiting remarkable outsider art.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.