This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

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

The United States' oldest Episcopal church still in active use.

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

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

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

One of the only memorials dedicated to journalists who died in combat.

The rooster who crossed the road lives on forever in Takoma Park, Maryland.

Wedged between two sets of row houses is an awkwardly located family graveyard.

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.

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

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

Three abandoned missile silos are hiding in plain sight behind a suburban development in Maryland.

Politicians, bureaucrats, and military officers gathered in this field near the Capitol to settle their disputes with blood.

This ruined quarry once produced the distinctive red sandstone used for construction projects in Washington, D.C.

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.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

Once America's tallest structure, now a Baltimore landmark.

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

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

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