Classified for credit

Maui coastal state park with lava shoreline and marine habitat — Hawaiian geology, marine biology, and coastal ecology.

Montana state park on the Hell Creek badlands with dinosaur fossil exposures and dramatic geology — supports paleontology, stratigraphy, and ecology.

Working historic farm with sustainable agriculture practices — covers agronomy, soil science, and mid-20th-century conservation farming history.

Basalt canyon and spring-fed waterfall unit of Thousand Springs State Park — covers Snake River Plain geology, spring hydrology, and riparian biology.

Hawaiian state recreation area on Oahu's windward coast with beach, dunes, and coastal ecology — Pacific island geography and marine biology.

Large national forest in eastern Oregon — supports forest ecology, watershed science, and geographic study of high-desert landscapes.

Large federal wildlife refuge in the high desert — covers migratory bird ecology, wetland biology, and Great Basin geography.

Large California state park in the Santa Monica Mountains — covers chaparral ecology, geology, and watershed biology with ranger-led programs.

Arkansas state park centered on one of the largest natural springs in the US — covers karst hydrology, spring ecology, and Ozark geography.

Florida state park with first-magnitude freshwater spring — covers karst geology, aquatic biology, manatee habitat, and spring ecosystems.

Rainforest trail in the Ko'olau Mountains — covers Hawaiian ecology, watershed biology, and tropical plant identification.

Victorian-era indoor conservatory with tropical and desert plant collections — covers plant taxonomy, biomes, and photosynthesis.

AZA-accredited zoo with active conservation programs — covers animal biology, ecology, and wildlife conservation across hundreds of species.

Mass Audubon sanctuary on Cape Cod with salt marsh, tidal flat, and coastal pine habitat — marine ecology, bird biology, and conservation science.

Drive-up access to one of Alaska's largest accessible glaciers — covers glaciology, geomorphology, and climate science firsthand.

Illinois state park with canyon formations, waterfalls, and diverse forest ecosystems — supports geology, ecology, and physical education.

Illinois canyon state park with canyons, waterfalls, and rock formations — geology, erosion, and riparian ecology in a hands-on outdoor setting.

Kansas wildlife refuge hosting free-roaming bison and elk herds — wildlife biology, Great Plains ecology, and native species conservation.

Historic urban estate with native wildlife exhibits, botanical garden, and working farm — covers ecology, horticulture, and Virginia natural history.

National Tropical Botanical Garden with guided tours of rare tropical plant collections — covers botany, conservation biology, and Pacific island ecology.

Indiana's first state park, featuring a limestone canyon and waterfall — covers karst geology, forest ecology, and Indiana natural history.

State park nature center adjacent to Indiana's first state park — covers karst geology, canyon formation, and native forest ecology.

National forest spanning Wyoming and Colorado — covers Rocky Mountain ecology, forest management, geology, and watershed science.

Vast national forest and grassland complex — supports ecology, biome comparison, geology, and geography across diverse Rocky Mountain and high-plains habitats.