This abandoned Victorian-style house was built in 1884.

Two dozen pinball games hidden away inside a most unlikely location.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

A remote horde of architectural treasures fit for Indiana Jones.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

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

A remarkable time capsule of American manufacturing deep in Maryland coal country.

Built by the patriotic residents of Boonsboro in a single day.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

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

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

This abandoned sea fort has become an accidental bird sanctuary.

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.

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

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

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

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

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

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