Classified for credit

John Ball Zoo administration building — the zoo itself covers zoology, conservation biology, and animal behavior across diverse species.

State park along the Little Miami River gorge — covers limestone geology, riparian ecology, and native plant and animal communities.

Barrier island state park with mangrove estuary and seagrass habitat — supports coastal ecology, marine biology, and Florida natural history.

Presidential library and museum covering JFK's administration — primary-source Cold War history, civil rights, and constitutional government.

Dark-sky astronomy park in Hocking Hills — telescope observation, celestial mechanics, and light-pollution science with ranger programming.

Providence science and innovation center offering hands-on STEM programming — supports inquiry-based science, technology, and applied math.

NPS historic site preserving John Muir's home and orchard — covers the history of American conservation, naturalism, and the national parks movement.

Wright Brothers aviation museum at Carillon Historical Park — powered flight engineering, aerodynamics, and the history of aviation technology.

Museum dedicated to Johnny Cash's life and career — covers 20th-century American music history, Southern culture, and the roots of country and rockabilly.

State park featuring volcanic shut-ins and clear swimming holes — geology of igneous rock formations and Ozark watershed ecology.

National memorial at the site of the 1889 Johnstown Flood — covers disaster history, dam engineering failure, civil engineering, and 19th-century industrial community life.

Florida state park encompassing scrub, flatwoods, and river habitats — subtropical ecology, river science, and Florida natural history with ranger programming.

Large Atlantic barrier-island state park with beach, dunes, and nature center — coastal ecology, barrier-island geology, and marine biology.

One of the largest protected tallgrass prairie ecosystems in North America — plant ecology, bison biology, fire-adapted grassland science, and Great Plains geography.

Earlham College natural history museum housing dinosaur fossils, Pleistocene mammals, and geology specimens — covers paleontology, taxonomy, and Indiana natural history.

Major Omaha art museum with European and American collections — supports art history, visual arts, and humanities curriculum.

Minnesota North Shore state park featuring the Devil's Kettle waterfall — fluvial geomorphology, boreal ecology, and watershed science.

Big Sur state park featuring coastal redwoods, a waterfall, and ocean bluffs — covers coastal ecology, redwood forest biology, and California geomorphology.

Avery Island botanical garden and egret sanctuary — subtropical ecology, bird biology, and Louisiana wetland habitats.

Miami wildlife and ecology park featuring birds, reptiles, and tropical species — zoology, conservation biology, and tropical ecosystem study.

Great ape exhibit within the Saint Louis Zoo — covers primate biology, behavioral ecology, and great ape conservation programs.

Restored 1860 lighthouse with museum — covers maritime navigation history, Fresnel lens optics, and Florida coastal history.

National Tropical Botanical Garden on Maui featuring rare native Hawaiian plants and the Pi'ilanihale Heiau — covers tropical botany and Hawaiian cultural history.

Oahu's westernmost point — a protected coastal reserve for Hawaiian monk seal and albatross observation and coastal ecology study.