A hidden alley in urban Baltimore is a haven for graffiti artists.

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

A massive white oak tree provides a beautiful canopy near a suburban shopping center and stood before the signing of the Constitution.

The longest-covered bridge in the state of Maryland.

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

Its diverse collection of computers and technology spans the ages.

A mammoth pair of Civil War artillery guns abandoned out in the forest.

Politicians, bureaucrats, and military officers gathered in this field near the Capitol to settle their disputes with blood.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.