Classified for credit

Historic manor house and children's farm museum in Frederick — covers Maryland agricultural history, 19th-century domestic life, and farm-era technology.

Chesapeake Bay shoreline state park — covers estuarine ecology, migratory bird observation, and Bay watershed geography with ranger programming.

Chesapeake Bay shoreline state park with youth group camping area — supports outdoor education, coastal ecology, and physical education programming.

Community museum dedicated to African American slavery and freedom in Sandy Spring, MD — covers antebellum slavery, abolitionism, and Black history in the Upper South.

Maryland state park on the Youghiogheny River — whitewater hydrology, riparian ecology, and outdoor education.

Children's museum centering African and African-diaspora cultures — multicultural social studies and early world geography.

Outdoor sculpture garden at the Baltimore Museum of Art — sculpture in a landscaped setting; primarily a walking outdoor experience with art context.

Maryland state park with 16 miles of trails, a reservoir, and diverse wildlife habitats — supports ecology, watershed science, and outdoor physical education.

19th-century screw-pile lighthouse relocated to Baltimore's Inner Harbor — covers maritime navigation history and lighthouse engineering.

Seasonal public garden in Baltimore famous for large tulip displays — supports plant biology, horticulture, and phenology observation.

Chesapeake Bay watershed state park with trails and fishing — covers riparian ecology, Maryland colonial history, and outdoor recreation.

Rare serpentine barrens ecosystem in Maryland — covers specialized plant adaptations, soil chemistry, and the ecology of globally uncommon habitats.

Civil War battlefield where Union forces stopped Lee's advance in 1862 — covers Maryland Campaign strategy, terrain, and primary-source military history.

Archaeological site and museum at Maryland's first colonial capital — covers 17th-century English settlement, colonial governance, and excavation methods.

Maryland state park centered on a reservoir — covers piedmont forest ecology, freshwater biology, and watershed conservation through trails and shoreline access.

Historic home where Mary Pickersgill sewed the Star-Spangled Banner — covers the War of 1812, the national anthem's origins, and Baltimore maritime history.

NPS trail linking War of 1812 battle sites in the Chesapeake region — covers the British campaign against Washington and Baltimore and the writing of the national anthem.

Home and tavern of Mary Surratt, convicted conspirator in Lincoln's assassination — covers Civil War era, the assassination plot, and Reconstruction justice.

Maryland state park along the Susquehanna River with historic mill sites, diverse wildlife, and riparian ecology — biology, conservation, and local history.

Susquehanna River state park with trails along the lower river — riparian ecology, watershed geography, and Chesapeake Bay tributary biology.

Waterfront discovery center at Mattawoman Creek — estuary ecology, Chesapeake Bay watershed, and local wildlife observation.

Computer history museum with hardware exhibits tracing computing from mainframes to PCs — covers computer science, engineering, and tech history.

Museum dedicated to Black American history and culture — covers African American contributions, civil rights history, and social studies.

Hands-on children's museum with Chesapeake Bay nature themes — supports early STEM, literacy, and environmental awareness.