At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

The oldest surviving one-room schoolhouse in Montgomery County, Maryland.

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

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The "lovely red Vega" of the legendary record-settling pilot.

At 207 feet, one of the world's longest continuous escalators.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Decades before the scandal, this staircase on the river was a literal "water gate."

Atop this media building, two hives containing more than 30,000 bees keep the surrounding area vibrant.

When it opened during the final years of the embargo, all the drinks and cigars were free.

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

A swimming hole in the historic industrial quarry that supplied the marble for the Baltimore Washington Monument.

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

An eerie, decaying ghost town destined to fade into the forest.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This abandoned sea fort has become an accidental bird sanctuary.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

A winding district gerrymandered into the shape of a mantis.

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

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

A hidden alley in urban Baltimore is a haven for graffiti artists.

Eighteen miniature death-scene dioramas.

The trials and tribulations of marking Poe's grave.