Maryland's first (and last standing) toll house on America's first federal road established the state as the "Gateway to the West."

This one-room cabin where the young colonel slept during the French and Indian War.

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

Bizarre Cavern.

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

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

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

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

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

A Civil War Museum with some notable medical antiques.

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.

An amazing example of Federal-period architecture, truly unique to this region of the state.

This bell is one of the last remnants of the lost city of Triadelphia.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

One of the last schoolhouses constructed in the early 20th-century still standing in Montgomery County.

This suburban park recalls the history of a famous tavern. Despite the name, it's no ordinary place!

The whole world in one water tank.

The only public school for Black children in the region from 1895-1936.

Once the center of a thriving early Black community called Martinsburg.

Dating to 1793, this is the oldest building in Poolesville.

Using a massive antenna made up of five miles of wire, two scientists tuned into organic radio waves from the planet Jupiter.

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.

Tiny observatory made big contributions to the study of the Earth's motion.