Classified for credit

Indoor aquarium in Oklahoma City with touch tanks and fish exhibits — covers marine and freshwater biology, aquatic ecosystems, and animal adaptations.

Full-dome digital planetarium at the South Carolina State Museum — covers astronomy, cosmology, and Earth-space science through scheduled public shows.

Preserved 1880s gold-mining ghost town maintained in arrested decay — covers California mining history, frontier economics, and 19th-century daily life.

Large formal botanical garden with themed collections — plant biology, garden design, and Midwest native species.

Olympic Peninsula state park within the Hoh Rain Forest corridor — covers temperate rainforest ecology, old-growth biology, and Pacific Northwest geography.

Large national forest in central Idaho with diverse ecosystems — forest ecology, geology, watersheds, and outdoor science fieldwork.

Federal wildlife refuge on the Delaware Bay flyway — supports migratory bird biology, wetland ecology, and waterfowl conservation studies with observation towers and trails.

Living-history village with 40+ historic buildings — covers Northern Plains pioneer settlement, agriculture, and 19th-century frontier daily life.

Abandoned lead mine with underground tours covering geology, mining engineering, ore extraction history, and Missouri's industrial past.

Working federal hydroelectric dam with adjacent fish hatchery — covers electricity generation, fish biology, aquaculture, and Columbia River ecology.

Outdoor garden themed around children's literature — connects plant biology and nature observation to classic picture books and reading curriculum.

Operating plantation with slave-street cabins and guided tours — covers antebellum agriculture, slavery, and South Carolina colonial history.

Hands-on science and discovery museum in Dayton with live animals and interactive STEM exhibits — covers physical science, biology, and natural history.

Living-history museum in Dodge City depicting 1870s–1880s cattle-trail era — covers Westward expansion, frontier justice, and post-Civil War Great Plains settlement.

Large Western and Civil War art museum with presidential letters gallery — covers American history through representational fine art.

Living-history railway village museum with operating narrow-gauge steam train and restored historic buildings — covers railroad technology history and 19th-century New England life.

Marine science center on the Maine coast with touch tanks and live specimens — covers marine biology, coastal ecology, and oceanography.

National wildlife refuge hosting massive sandhill crane and snow goose migrations — field study in migratory bird ecology and riparian habitat conservation.

NWR visitor center on the Rio Grande flyway — covers migratory bird ecology, riparian habitat, and wildlife conservation programs.

National Wildlife Refuge on the Rio Grande flyway — covers migratory bird ecology, riparian habitat biology, and Chihuahuan Desert natural history.

NPS memorial at Fort Sumner covering the Long Walk of the Navajo and Mescalero Apache — primary-source study of federal Indian policy and 19th-century history.

National and state park island chain in Boston Harbor — covers coastal ecology, tidal zones, and 19th-century harbor fortification history.

Island state park in Boston Harbor with ranger programs covering coastal ecology, marine biology, and Civil War-era fort history.

Brooklyn Botanic Garden with 52 acres of curated plant collections — supports botany, plant taxonomy, and seasonal ecology study.