Classified for credit

Gibbon Ridge is part of the National Zoo grounds in Washington, DC — animal behavior, zoology, and conservation biology in a world-class setting.

Smithsonian's free national zoo with 1,800+ animals and active conservation research — supports zoology, ecology, and wildlife biology.

Smithsonian National Zoo's Bird House with live avian species from multiple continents — supports ornithology, adaptation, and conservation study.

Smithsonian National Zoo's Great Ape House — primate behavior, social structure, and great-ape conservation biology.

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

Free outdoor sculpture garden on the National Mall — features monumental sculptures and seasonal ice rink; supports visual art appreciation and public art study.

446-acre federal arboretum in DC with themed plant collections — botany, plant taxonomy, ecology, and horticultural science.

Federally operated living plant collection on the National Mall — covers plant taxonomy, economic botany, global biomes, and U.S. agricultural science history.

NPS-managed urban park along the Anacostia River — riparian ecology, urban watershed study, and outdoor recreation with ranger programming.

U.S. Botanic Garden outdoor gardens featuring the monumental Bartholdi Fountain — supports plant science, botany, and landscape design.

Historic urban woodland park in DC with mature forest and creek — supports basic ecology observation and outdoor PE.

Smithsonian National Zoo elephant habitat with interpretive signage — covers pachyderm biology, elephant social behavior, and Asian elephant conservation.

Urban national park preserving Civil War–era fortifications with trails, wildlife habitat, and ranger programming — ecology and Civil War defensive history.

Forested urban stream-valley park in D.C. with trails along Foundry Branch — urban ecology, riparian biology, and wildlife observation.

Smithsonian outdoor sculpture garden on the National Mall — modern and contemporary sculpture in a public landscape setting.

National Park Service aquatic garden with boardwalk through tidal marsh and lotus ponds — aquatic ecology, wetland biology, and migratory bird observation.

River otter exhibit at the National Zoo — covers mustelid biology, riparian habitat, and animal behavior observation.

Urban national park with forests, creek habitats, and ranger programs covering ecology, geology, and native wildlife.

Theodore Roosevelt Island in the Potomac River — forested nature trail supports ecology, DC geography, and conservation history tied to Roosevelt's legacy.

National Zoo sea lion exhibit at the Smithsonian covering pinniped biology, marine mammal adaptations, and conservation programs.

Sloth bear habitat at the Smithsonian's National Zoo — mammalian biology, behavioral ecology, and South Asian wildlife conservation.

Urban wetland conservancy in NW Washington DC — supports study of freshwater ecology, native riparian plant communities, and urban conservation management.

National Mall parkland bordering the Tidal Basin with famous cherry trees and war memorials — PE and nature observation with incidental history context.