The elevator hidden in a smokestack on Roosevelt's yacht now serves as a monument to the former president.

FDR's Art Deco hospital tower was hopelessly inefficient.

Explore the legends surrounding these mythical sea creatures inside this museum.

This historic lighthouse was well known for the large number of women who served as its keeper.

The world's oldest continuously operating airport was founded by the Wright Brothers.

Remains of a historic fountain that was mysteriously lost in the demolition of a D.C. traffic circle.

A mammoth pair of Civil War artillery guns abandoned out in the forest.

A lawn full of retired spacecraft on display at one of NASA's first research labs.

An isolated island home to one of the oldest English-speaking communities in the region and Maryland's state dessert.

The Forest Service's surprisingly sophisticated collection of wildfire prevention art features America's most beloved bear.

This one-room cabin where the young colonel slept during the French and Indian War.

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

A Civil War Museum with some notable medical antiques.

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

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

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

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.

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

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

Bizarre Cavern.

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

Eco-friendly island mansion.

A single light illuminates one man's overshadowed contributions to street lamp history.