This propitious plastic porcine has been petitioning park visitors to pick up after themselves for more than 50 years.

Just outside the Naval Academy, Hell Point is a historical marker that could easily be the point where failed students wait for the bus.

The hidden ruins of a mill that is linked to an attempt to assassinate the vice president of the United States.

A winding district gerrymandered into the shape of a mantis.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

FDR's Art Deco hospital tower was hopelessly inefficient.

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

She stares out across six lanes of traffic, clutching a musket and infant with determination.

The bridge's highly-contested plaque (once again) honors Confederate President Jefferson Davis.

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

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

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

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

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

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

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

The whole world in one water tank.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

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

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

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

The record holder for the world’s largest peach.