Classified for credit

Urban wildlife sanctuary along Fore River estuary offering bird and plant identification, wetland ecology, and self-guided nature study.

Spanish-American War coastal artillery fort — covers early 20th-century military fortification, coastal defense strategy, and Maine maritime history.

Early American blockhouse fort on the Sheepscot River covering post-Revolutionary coastal defense and early Maine territorial history.

Well-preserved Civil War–era granite fort on the Penobscot River — covers 19th-century military engineering, coastal defense strategy, and Maine history.

Early 19th-century coastal fort in Castine, Maine — supports War of 1812 and early American military history in the District of Maine.

Colonial-era fort on the Maine coast used from the French and Indian War through WWI — covers military history, fortification design, and coastal geography.

Maine state park with a Civil War-era fort and lighthouse on Penobscot Bay — covers 19th-century coastal defense, maritime history, and Fresnel lens optics.

Partially preserved Civil War-era coastal fort at the mouth of the Kennebec River — covers 19th-century military engineering and coastal defense history.

Reconstructed 17th-century English colonial fort on the Maine coast — covers early colonial settlement, Anglo-Wabanaki conflicts, and frontier military life.

National monument at the birthplace and homestead of Frances Perkins, first female U.S. Cabinet secretary — covers New Deal labor history and women's civic leadership.

Small science center in Easton, ME — hands-on STEM exhibits and beginner science programs.

Visitor and outreach center for Maine's coastal island refuges — seabird conservation biology and island ecosystem education.

Working family farm open for seasonal visits — supports plant biology, sustainable agriculture, and farm-to-table ecology lessons.

College of the Atlantic's natural history museum with Maine coastal and Acadian specimens — covers marine biology, ecology, and regional natural history.

Coastal dune preserve on Lake Michigan with ranger programs covering dune ecology, glacial geology, and Great Lakes natural history.

Maine Audubon headquarters with trails, salt marsh, and wildlife habitat — supports bird biology, wetland ecology, and conservation education.

Home where Harriet Beecher Stowe wrote Uncle Tom's Cabin — connects abolitionist literature, antebellum social history, and the causes of the Civil War.

Rural Maine nature center with trails, wetlands, and forest ecosystems supporting hands-on biology and ecology field study.

Historic 1931 suspension bridge adjacent to Fort Knox State Historic Site on the Penobscot River — supports bridge engineering history alongside 19th-century military fortification study.

Undeveloped coastal wildlife sanctuary on Penobscot Bay offering study of Maine shoreline ecology, migratory birds, and marine habitat.

Fire museum in a historic firehouse covering firefighting equipment history, fire safety, and community service roles.

University of Maine anthropology museum with Native American and world cultures collections — covers indigenous history and material culture.

Coastal nature preserve near Acadia — intertidal ecology, marine habitat observation, and coastal geography.

The only cryptozoology museum in the world — covers folklore of undiscovered species, critical thinking about evidence, and the history of zoological discovery.