Classified for credit

Baltimore city arboretum with labeled tree collections and nature trails — supports dendrology, plant biology, and urban ecology curriculum.

DC History Center documents Washington DC's local and political history through archives and exhibits covering city planning, civil rights, and governance.

State park visitor/discovery center at Deep Creek Lake covering Appalachian ecology, freshwater biology, and Maryland highland geography.

Maryland's largest freshwater lake state park in Garrett County — covers freshwater ecology, glacial lake geology, and Appalachian mountain biology.

Waterfront nature discovery center on the Bush River — covers local wetland ecology, watershed science, and Chesapeake Bay biology.

Hands-on children's science and discovery center in Hagerstown — covers basic physics, technology, and STEM concepts through interactive exhibits.

Underground arts space in a former DC streetcar tunnel — contemporary art exhibits with an architectural and infrastructure history dimension.

Island NWR on the Chesapeake Bay — shorebird and waterfowl ecology, tidal wetland biology, and Chesapeake Bay conservation science.

Preserved Baltimore rowhouse where Poe lived — covers 19th-century American literary history and biography.

Maryland state forest on the Elk Neck peninsula — supports ecology field study of mixed hardwood forest, coastal habitat, and watershed biology.

Maryland state park on the Chesapeake Bay with forested trails, a historic lighthouse, and diverse coastal habitats — supports ecology, ornithology, and outdoor PE.

Maryland state park campground on the Elk Neck peninsula — supports ecology, Chesapeake Bay watershed study, and outdoor physical education.

One of Maryland's oldest mill towns — walkable historic district covering colonial commerce, Civil War history, and 19th-century industry.

Hands-on children's museum in Ellicott City offering interactive exhibits in early literacy, STEM concepts, and imaginative play.

Gilded Age estate and library with decorative arts and rare book collections — covers late-19th-century history and material culture.

Interactive fairytale-themed children's museum — supports early literacy, storytelling, and imaginative play for young learners.

Fire museum documenting the history of firefighting equipment, technology, and community fire services — applied history of public safety and engineering.

Fire apparatus museum with historic engines and equipment — covers firefighting technology, engineering history, and public safety.

Civil War-era Union fort on the Potomac — preserves earthworks and artillery emplacements covering 19th-century coastal defense and military engineering.

Chesapeake Bay shoreline park with tidal habitat and fishing pier — supports ecology, watershed science, and coastal geography study.

NPS-managed fort on the Potomac River active from the Revolution through WWI — covers coastal defense engineering, military history, and Chesapeake geography.

County nature center with trails, wildlife habitat, and naturalist programming — local ecology, native species, and outdoor environmental education.

Maryland state park in the Catoctin Mountains with hiking trails and overlooks — supports Appalachian forest ecology, geology, and physical education.

Museum at George Washington Masonic National Memorial covering Freemasonry's role in American founding history and civic culture.