An astounding collection of medical specimens, including bits of President Lincoln.

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

This shale formation along the Appalachian Trail once inspired the third president of the United States.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

One of the only memorials dedicated to journalists who died in combat.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Bizarre Cavern.

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

A miniature city within a city, complete with traffic signs, signals, and streets to teach Baltimore's youth traffic safety laws.

This Asian-inspired tower in a lush urban park provides spectacular panoramic views of Baltimore.

This grove was planted more than a century ago by the War Mothers of World War I.

The only public swimming pool in Baltimore open to Black Americans during segregation is now a permanent memorial art exhibit.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

George Washington's dentures and Queen Victoria's dental instruments are in the nation’s official museum of the dental profession.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

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

A former pillar of the Black community in Ellicott City.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.