This isn't your average roadway—it's actually a National Park and a transportation pioneer.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

The only recreation of William Shakespeare's indoor playhouse.

One of the last active volcanoes on the Eastern seaboard.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

Outsider art meets paleontology at this roadside reptile repository.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

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

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

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

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

Built in 1815, the stabilized ruins of the grist mill and sawmill are now gated, but interpretive displays on the features and functions of the mill preserve its history.

The hidden ruins of a mill that is linked to an attempt to assassinate the vice president of the United States.

This historic lighthouse was well known for the large number of women who served as its keeper.

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

A remarkable time capsule of American manufacturing deep in Maryland coal country.

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

The trials and tribulations of marking Poe's grave.

A soon-to-be-forgotten roadside spectacle loaded with local lore.

Considered by many to be a local landmark and treasure.

A tiny one-room church built after one man's prayer for healing was answered.

The oldest automobile museum in the United States.

One of Gettysburg’s least visited battlefield memorials is off the beaten path, but worth a visit.