Ship skeletons haunt Baltimore's waterways.

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

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

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

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

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

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

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

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

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

This abandoned Victorian-style house was built in 1884.

A collection of artifacts from Maryland's maritime past.

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

A tribute to the beloved, kind-hearted "homeless mayor" of Silver Spring.

FDR's Art Deco hospital tower was hopelessly inefficient.

The Decoy Capital of the World.

A relic of FDR's brief foray into utopian urban planning.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

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

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

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

A benevolent, 16-foot-tall river dragon lives on a suburban lawn.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

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