Classified for credit

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.

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.

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.

Oahu coastal scenic shoreline with ocean cliffs, tide pools, and humpback whale viewing — covers marine biology, coastal geology, and Hawaii's ocean ecosystems.

Large nature center with trails, native habitats, and interpretive exhibits — covers Michigan ecology, wildlife biology, and conservation science.

Interactive kangaroo and exotic animal ranch near Denver — supports zoology, marsupial biology, and animal husbandry concepts through close-contact encounters.

State park along the Kankakee River with canyons, caves, and diverse ecosystems — covers Illinois geology, riparian biology, and outdoor education.

BLM monument featuring volcanic tuff cone formations — covers geology, erosion processes, and New Mexico's volcanic and Pueblo land history.

Remote national monument in Maine's North Woods with undeveloped trails and ranger programs covering Appalachian ecology, watershed biology, and Wabanaki history.

Lake Erie island state park with glacial grooves, fossil beds, and migratory bird habitat — covers glacial geology, paleontology, and island ecology.

State-run environmental education center with trails and wetland habitats — ecology, watershed science, and field biology programming for K–12.

NPS-managed aquatic garden and tidal wetland — covers aquatic plant biology, migratory bird ecology, and Anacostia River watershed geography.

Interactive animal park and cave tour in KY featuring Australian wildlife and local cave geology — covers zoology, animal adaptation, and karst science.

Adventure zoo featuring Australian and exotic animals plus adjacent cave access — covers animal adaptations, Australian ecosystems, and karst geology.

Working horse park and museum covering equine breeds, care, and the horse's role in American history — supports biology, agriculture, and cultural history.

Wisconsin state forest on glacial terrain — field study in glacial geology, forest ecology, and landform identification with hiking trails and naturalist programming.

State forest shaped by glacial activity with interpretive trails and visitor center — covers glacial geology, forest ecology, and watershed biology.

Glacially formed state forest unit with kettle lakes and moraines — covers glacial geology, ecology, and Wisconsin natural history.