Classified for credit

World's largest electric railway museum with 250+ restored trolleys — transportation history, electric traction engineering, and 20th-century urban transit.

Maine state park on Sebago Lake with ranger programs, swimming, and forest trails — supports ecology, freshwater biology, and outdoor PE curriculum.

Acadia National Park nature center with ranger programs, natural-history exhibits, and Tarn trail access — covers coastal Maine ecology and geology.

Hands-on STEM learning center with interactive exhibits — covers engineering, coding, and applied mathematics through project-based activities.

Living-history ice-harvesting museum demonstrating 19th-century ice-cutting tools, cold-storage technology, and the pre-refrigeration New England economy.

Maine living-history center on a working farm with 19th-century programming — covers Civil War era, farm life, and New England history.

NOAA-designated estuarine reserve with trails and a working research farm — covers coastal ecology, tidal biology, wetlands conservation, and land-use history.

National Estuarine Research Reserve with salt marsh, forest, and beach habitats — covers estuarine ecology, coastal geology, and conservation biology.

Narrow-gauge heritage railway museum with restored equipment and operating trains — covers railroad engineering history and Maine's lumber-transport economy.

Maine coastal state park with osprey nesting area and farm — covers tidal ecology, estuary biology, and Maine coastal natural history.

Preserved 19th-century living-history village — covers rural Maine daily life, period crafts, and early American social history.

Museum dedicated to the history and culture of the Wabanaki peoples of Maine — Indigenous history, archaeology, and living culture.

Living-history Acadian village in northern Maine — covers French-Canadian settlement, Acadian culture, and 19th-century rural life.

Undeveloped Androscoggin River corridor state park — riparian ecology, Maine river geography, and wildlife observation along an undeveloped floodplain.

Maine state park centered on Echo Lake with forested trails and volcanic geology — ecology, glacial landforms, and outdoor PE.

WWII-era concrete coastal artillery battery on Peaks Island — covers coastal defense strategy, military engineering, and the U.S. home-front war effort.

Heritage excursion railroad on a historic Maine rail line — covers 19th-century railroad history, rural Maine economy, and the role of rail in regional development.

Coastal Maine state park with rocky shoreline — intertidal ecology, coastal geology, and outdoor physical education.

Private observatory offering public stargazing programs — covers astronomy, telescope optics, and celestial mechanics.

Coastal Maine land trust preserve with trails and tidal access — covers coastal ecology, land conservation, and estuarine biology.

Audubon-managed mountain sanctuary with hiking trails — covers bird biology, forest ecology, and wildlife conservation.

College art museum with permanent and rotating exhibits spanning antiquity to contemporary — supports art history and visual arts curriculum.

Bowdoin College observatory with public viewing opportunities — astronomy, optics, and celestial mechanics through telescope observation.

Maine state park with forested summit trails and diverse habitats — covers forest ecology, trail navigation, and New England geology.