Time travel with sweets across history at this research-based candy store.

A historic coal mine that doubles as a museum and tourist attraction.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

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.

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

The wooded estate of the Forest Service employee responsible for D.C.’s cherry blossom trees.

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

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

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

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

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.

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.

Two dozen pinball games hidden away inside a most unlikely location.

A Civil War Museum with some notable medical antiques.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

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

This abandoned sea fort has become an accidental bird sanctuary.

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

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