America's first public mental health facility.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

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

A benevolent, 16-foot-tall river dragon lives on a suburban lawn.

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

Once a private collection, now the only museum of arms and armor in the Western Hemisphere - CLOSED.

An otherwise quiet campground becomes a bustling medieval town for two weeks every year.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

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

Enormous lake at the bottom of a unique cave system.

The world's longest known cave system.

Berkeley Springs State Park boasts the nation's only monument commemorating presidential bathing.

A museum dedicated exclusively to aircraft used in the military.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

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

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Art deco landmark on the outskirts of Washington, D.C.

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

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

The site of the climactic scene from the classic horror film is now a historic landmark.

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