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

A suburban museum tells the story of a historic transportation network and even provides rides in antique trolley cars.

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

The Decoy Capital of the World.

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

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

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

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

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

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

A haunting exhibit in a wildlife refuge center highlights threatened species and the conservation efforts needed to save them.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

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

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

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

A Civil War Museum with some notable medical antiques.

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

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

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

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

The land is home to swimming ponies and a legendary 18th-century treasure.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

The "first cat," "first dog," and even a presidential pygmy hippo all get their due in this museum.