Classified for credit

Nature center adjacent to Arlington's river greenbelt with interactive exhibits on local ecosystems, wildlife biology, and watershed ecology.

Urban nature park along the Trinity River in Arlington with trails, wildlife habitat, and a nature center — supports riparian ecology, native species identification, and outdoor PE.

Kerrville nature center on the Guadalupe River — covers Texas Hill Country ecology, native plants, wildlife, and riparian biology.

Botanic garden in Fort Worth — plant taxonomy, native Texas flora, horticulture, and ecological landscaping principles.

Licensed wildlife rehabilitation center near Dallas — covers raptor and bird biology, injury recovery, and native Texas wildlife conservation.

Regional railroad museum with locomotives and artifacts — covers the history of rail transport, steam engineering, and the economic development of Southeast Texas.

East Texas salt mine and mineral extraction site covering geology, mining history, and industrial chemistry of halite salt deposits.

East Texas national forest covering longleaf pine ecology, watershed biology, and forest management within the Sabine River drainage basin.

Civil War battleground where Confederate forces repelled a Union naval invasion — military strategy, Texas history, and Reconstruction-era civics.

Texas Ornithological Society woodland sanctuary on the Gulf Coast — neotropical migratory bird observation and avian ecology.

Nonprofit wolf sanctuary offering educational tours — covers wolf behavior, pack dynamics, and endangered-species conservation biology.

Restored Victorian home of Civil War general and U.S. senator — covers Reconstruction-era politics, military history, and 19th-century domestic life.

Museum complex preserving Sam Houston's homes and personal artifacts — covers Texas independence, Republic of Texas history, and 19th-century Southern politics.

National forest in East Texas with longleaf pine habitat and the Lone Star Hiking Trail — covers forest ecology, biodiversity, and land-use geography.

Planetarium at Sam Houston State University offering public sky shows — covers astronomy, the solar system, and celestial navigation.

Presidential library and museum for House Speaker Sam Rayburn — covers 20th-century congressional history, New Deal politics, and Texas public service.

Regional fine-arts museum with rotating and permanent collections — covers art history, ceramic arts, and regional Southwest artistic traditions.

Texas state park on O.H. Ivie Reservoir with varied semi-arid habitats — ecology, Texas geology, wildlife observation, and outdoor recreation.

Member-run art museum in San Antonio exhibiting works by regional artists — supports visual art appreciation and Texas art history.

Railroad heritage museum with rolling stock and artifacts — covers railroad history, industrial development, and transportation engineering.

San Antonio River Walk — an urban canal system with historical markers covering Spanish colonial, Mexican, and Texas Republic eras.

Coastal NWR on the Texas Gulf — migratory shorebird and wading bird ecology, coastal wetland habitat study, and wildlife conservation.

1836 Battle of San Jacinto site with monument and museum — covers Texas independence, the Texas Revolution, and its role in U.S. westward expansion.

Museum at the San Jacinto battleground covers the 1836 Texas Revolution and the political events that shaped Texas statehood.