Classified for credit

Colorado state park with dramatic sandstone canyon walls supporting geology, rock-climbing, and Front Range ecology study.

State park featuring 1.5-billion-year-old granite boulders — covers igneous geology, erosion, and Missouri Ozarks ecology with self-guided trails.

Elephant habitat area at the Cincinnati Zoo — supports wildlife biology, elephant behavioral ecology, and conservation curriculum.

Elephant exhibit at Denver Zoo — covers pachyderm biology, elephant conservation programs, and African/Asian habitat ecology.

First American powder mill site along the Brandywine, founded by E.I. du Pont — covers early American industrial chemistry, gunpowder production, and the du Pont family legacy.

Museum and hands-on workshop at Eli Whitney's historic mill site — covers invention, early American manufacturing, interchangeable parts, and mechanical engineering.

National Estuarine Research Reserve on Monterey Bay — estuarine ecology, marine biology, migratory birds, and California coastal conservation.

Florida state park with manatee viewing and native wildlife — covers manatee biology, Florida spring ecology, and freshwater conservation.

Florida state park and wildlife refuge home to endangered Florida manatees — covers marine mammal biology, Florida ecosystems, and conservation programs.

AZA-accredited zoo near Philadelphia with conservation programming — covers zoology, animal behavior, and wildlife conservation across a diverse collection.

Hands-on regional science center with interactive STEM exhibits covering physics, life science, and technology.

Civil rights memorial museum documenting the murder of Emmett Till — covers 1950s racial violence, the civil rights movement, and the history of racial injustice in Mississippi.

California State Historic Park preserving a major 19th-century hard-rock gold mine — covers Gold Rush history, mining engineering, and California economic development.

Iconic 1930s Art Deco skyscraper with observation deck — covers 20th-century architectural history, urban geography, and NYC's economic development.

Historic site of Edison's Menlo Park laboratory — invention process, electrical engineering history, and the science of early electric lighting.

Exposed pink granite batholith in the Hill Country — geology of igneous rock formation, exfoliation domes, and Central Texas ecology.

Private foundation housing one of the largest elephant herds in captivity — endangered species conservation, large-mammal biology, and wildlife advocacy.

Living-history pioneer village with period buildings — 19th-century settlement life, trades, and Minnesota frontier history.

Victorian glass conservatory at NYBG housing tropical and temperate plant collections — botany and plant ecology.

Maritime museum on Presque Isle Bay featuring the brig Niagara — covers naval history of the War of 1812, ship construction, and Great Lakes commerce.

Regional zoo with diverse animal collection — supports zoology, animal adaptations, and conservation biology curriculum.

Main visitor center for Everglades National Park — introduces subtropical wetland ecology, endangered species, and South Florida watershed systems.

Regional zoo with conservation programs covering animal biology, habitats, and wildlife rehabilitation.

Gateway town to Rocky Mountain National Park — serves as base for ecology, geology, and Rocky Mountain geography field study.