Classified for credit

Skyscraper observation deck and structural engineering exhibits — covers structural load, wind forces, and urban civil engineering concepts.

Museum in Stevenson, WA covering Columbia River Gorge history — includes Native cultures, Lewis and Clark exploration, and regional geology.

Federal wildlife refuge in the Columbia Basin with lakes, wetlands, and shrub-steppe habitat — migratory bird biology and high-desert ecosystem ecology.

Federal wildlife refuge in the Columbia River valley — covers wetland ecology, migratory bird biology, and Pacific Northwest habitat conservation.

Washington state park in the Okanogan Highlands with a reservoir and mixed-conifer habitat — covers high-desert ecology and watershed geography.

Telephone history museum with working equipment and hands-on exhibits — covers telecommunications engineering, electrical science, and the evolution of communications technology.

Community botanical garden with diverse plantings — plant identification, horticulture, and local ecology in a self-guided outdoor setting.

Small zoo specializing in endangered species including tigers and lemurs — supports wildlife conservation, zoology, and animal behavior study.

Community college planetarium with public shows — covers astronomy, celestial mechanics, and the scale of the solar system.

Museum covering commercial cranberry cultivation — addresses bog ecology, harvest methods, agricultural science, and the Pacific Coast cranberry industry.

Eastern Washington state park on Curlew Lake — covers freshwater lake ecology, native fish habitat, and outdoor recreation skills.

Washington state park on the Columbia River — covers riparian and shrub-steppe ecology, river geography, and Columbia Basin hydrology.

Hands-on petting zoo where children interact with farm and domestic animals, supporting basic zoology and animal husbandry concepts.

Campus-based science hall and planetarium at CWU — astronomy, physics, and Earth science with public planetarium shows.

Coastal wetland sanctuary on Puget Sound — habitat study, migratory bird observation, and Pacific Northwest ecology.

National wildlife refuge on Dungeness Spit — migratory bird biology, coastal ecology, and Pacific Northwest geography.

Visitor contact station for Dungeness National Wildlife Refuge — covers shorebird ecology, Olympic Peninsula coastal habitats, and wildlife conservation.

National Wildlife Refuge recreation area on the Strait of Juan de Fuca with tidal flats, migratory birds, and coastal ecology programs.

Interpretive nature center on the Dungeness River — covers Pacific Northwest riparian ecology, salmon habitat, and watershed biology.

Historic private estate garden with Arts and Crafts landscape design — covers ornamental horticulture and Pacific Northwest plant ecology.

National reserve preserving mid-19th century farming landscape on Whidbey Island — covers Donation Land Claim Act, pioneer settlement, and Pacific Northwest history.

Private display garden featuring centuries-old bonsai and Pacific Northwest native plants — plant biology, horticultural art, and ecological adaptation.

Environmental science center at Seahurst Park — covers Puget Sound ecology, water quality, and hands-on marine and environmental science.

City arboretum and display gardens in Everett, WA — covers plant taxonomy, horticultural science, and Pacific Northwest native species identification.