The headquarters of the Audubon Naturalist Society is a small slice of heaven for nature lovers.

A historic cemetery with unique artwork, a Civil War fort, and also happens to be the site of the Battle of Bladensburg.

A state park that once served as an important river crossing, and now offers protected lands for endangered plants and animals.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

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

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

The Decoy Capital of the World.

A Maryland museum dedicated to Black history, housed in a historic church.

The U.S. government built the million-pound stack of steel during the Space Race.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

Tiny observatory made big contributions to the study of the Earth's motion.

An unusual sculpture, an interesting history, in a strange place, for a good cause.

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

A historic cemetery filled with quirky faux wood art and unique tombstones.

This suburban house is made of dirt, and almost sparked a revolution in home construction.

Historic home of America's sweetheart sharpshooter, Annie Oakley.

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

This 1830s store is believed to be the site of Harriet Tubman's first stand.

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

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

Easter in Westminster may be the only time and place to behold Edgar Allen Poe made entirely of Marshmallow Peeps.

A remote horde of architectural treasures fit for Indiana Jones.