The ruins of an 18th-century mansion that was once named "Mistake" by the man who had it built.

The final resting place of a physician rescued during the bombardment of Fort McHenry.

Evidence of a long-ago crush remains scratched into the glass at this historic Maryland House.

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

One of the few remaining covered bridges in Lancaster County.

Dedicated to a U.S. Army lieutenant colonel who was also a bird watcher and artist.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

The first of Lancaster's "rural cemeteries."

In this cemetery stands the country's first public crematorium.

This iconic Lancaster everyman has been reading the same story since 1980.

The oldest farmer's market in America is so ancient it was approved by the King of England.

The home of possibly the least-loved U.S. president stands as a sort of unpopular Monticello.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

An outlandish shoe shaped house built by an eccentric millionaire.

Constructed by the younger brother of George Washington.

Concerned residents saved this historic house and garden from demolition.

An 18th-century townhouse that once hosted guests of the president.

This plaque celebrates the sister city relationship between Fredricksburg and Fréjus.

A former pillar of the Black community in Ellicott City.

A hidden mid-city oasis, built for pollinators amid the concrete of federal buildings

Slated for demolition, this house was relocated piece by piece.

A piece of telecommunications history.

The boy drummer who became the last surviving Maryland soldier of the Revolution

This site is believed to be connected to the oldest house in Arlington County.