Classified for credit

Marine education and snorkel/dive operation in Lahaina — covers coral reef ecology, marine species identification, and ocean conservation.

Exposed granite monadnock with rare diamorpha plant communities near Atlanta — covers geology, plant ecology, and Georgia Piedmont natural history.

Recovered 1856 steamboat and 200+ tons of cargo on display — covers 19th-century riverboat technology, trade, and westward expansion.

Federal wildlife refuge on the Texas Gulf Coast — primary wintering habitat for whooping cranes; supports ornithology, coastal ecology, and endangered species study.

University of Minnesota arboretum with extensive labeled plant collections supporting botany, horticulture, and seasonal ecology study.

Drive-through wildlife safari park — covers animal biology, behavior, and conservation across a wide range of species.

Operational narrow-gauge steam railroad on a historic freight line — covers railroad history, steam locomotive mechanics, and 19th-century transportation.

Immersive Arctic habitat exhibit at the Detroit Zoo featuring polar bears and sea otters — supports marine mammal biology and Arctic ecosystem study.

Historic gold processing mill and mine tunnel with guided tours — covers hard-rock mining methods, ore chemistry, and Colorado mining history.

CAF museum with restored WWII-era aircraft — covers aviation history, wartime logistics, and aeronautical engineering development.

Natural history museum with dinosaur fossils, paleontology exhibits, and Southwest geology — covers earth science, prehistoric life, and regional archaeology.

Natural history museum parking lot entry point — the museum itself covers paleontology, geology, and Southwestern Indigenous archaeology.

Indoor aquarium in Tempe with touch pools and marine exhibits — covers marine biology, ocean ecosystems, and aquatic adaptations.

State anthropology museum at U of Arizona with Southwest Native American and archaeological collections — covers indigenous cultures, archaeology, and cultural anthropology.

Full-scale Noah's Ark replica presenting a biblical-history narrative — covers ancient Near Eastern textual traditions and the history of biblical interpretation.

Regional aviation and military museum with aircraft spanning WWII through the jet age — covers military history, aeronautical engineering, and US foreign policy.

Military aviation museum with WWII-era and Cold War aircraft — covers aerospace history, military technology, and the history of flight.

Alligator farm and petting zoo offering close-up reptile encounters — covers American alligator biology, reptile adaptations, and Arkansas wildlife.

Decommissioned USS Razorback submarine on the Arkansas River — covers submarine engineering, naval history, and Cold War military technology.

NPS-managed antebellum home overlooking the Potomac — covers Civil War history, the life of Robert E. Lee, Arlington estate history, and the origins of Arlington National Cemetery.

Active national cemetery and memorial serving as a primary-source site for US military history, sacrifice, and civic memory.

Birthplace-town museum dedicated to Neil Armstrong covering Mercury–Gemini–Apollo engineering, orbital mechanics, and spaceflight history.

Old-growth coastal redwood reserve north of San Francisco — covers forest ecology, tree biology, and California natural history.

Museum at Fort Rucker preserving U.S. Army aviation history with helicopters and aircraft covering the evolution of military flight.