Before Nixon, "watergate" meant canals.

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

When it comes to handsignals (and colonialism) rock always beats scissors.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

FDR's Art Deco hospital tower was hopelessly inefficient.

The whole world in one water tank.

A well-worn trail through thick woods in northern Montgomery County leads to an old schoolhouse.

A Civil War Museum with some notable medical antiques.

According to local history, this cast-iron canine was nearly melted down for bullets during the Civil War.

Historic barracks utilized during both the Revolutionary War and the Civil War.

Rumors persist that a bottle of whiskey is sealed within this Demijohn-shaped adornment.

This three-story Victorian mansion is now home to the National Park Service’s Historic Preservation Training Center headquarters.

This four-story steel sphere in Maryland was used to test biological weapons.

This hidden treasure provides a charming access point along the south side of Baker Park.

Take a trip to the past aboard a 1920s railcar or open flatcar for a scenic ride through Maryland farm country.

A well-preserved quarry and six of eight continuous burning pot kilns used to make burnt lime and crushed stone are highlights of the self-guided walking tour in Fountain Rock Park.

First built around 1848, this bridge was destroyed by arson, but original timbers are included in the replacement.

The smallest covered bridge in Maryland.

Unannounced visitors are now welcome at the site of the largest Prohibition-era bootlegging operation in the region.

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

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

Waterfalls, rapids, and top-notch swimming spots await in this densely forested corner of the Smokies.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.