Classified for credit

Working federal currency printing facility with guided tours — covers intaglio printing technology, anti-counterfeiting science, and monetary economics.

Full-dome digital planetarium inside the Houston Museum of Natural Science — covers astronomy, celestial mechanics, and space science through immersive programming.

American Airlines aviation museum with full-size aircraft — covers aeronautical engineering, the history of commercial flight, and aviation technology.

Guided tour of a living cave system near Boerne — covers speleology, karst geology, cave formation, and cave-adapted biology.

Guided tour through a live cave system — covers speleology, karst geology, mineral formation, and underground ecosystems.

Commercially operated cave system with extensive speleothem formations — covers geology, mineralogy, and karst formation processes.

Accredited big-cat sanctuary offering tours focused on exotic animal behavior, wildlife conservation, and captive-care biology.

Indoor aquarium at Fair Park featuring freshwater and marine species with exhibits on aquatic biology and Texas ecosystems.

Chocolate factory tour covering food-science production processes, ingredient sourcing, and manufacturing chemistry.

Indoor butterfly conservatory at HMNS with live tropical butterflies and emergence lab — covers insect life cycles, entomology, and rainforest ecology.

Regional museum covering Gulf Coast natural science and maritime history, including replica Columbus ships and local archaeology exhibits.

Working crocodilian facility with guided tours — covers reptile biology, predator ecology, and animal husbandry in a hands-on setting.

Natural limestone cave in Garner State Park area — covers speleology, karst geology, cave formations, and groundwater systems.

Natural limestone cave system near Austin offering guided tours covering karst geology, speleothem formation, and cave ecosystems.

Natural limestone sinkhole hosting one of the world's largest Mexican free-tailed bat colonies — covers karst geology and mammal biology.

Dinosaur-focused science museum and research center covering vertebrate paleontology, fossil identification, and geologic time.

Interactive science center on Galveston Island — covers physics, engineering, and earth science through hands-on exhibits.

Hands-on science center with interactive exhibits covering physics, biology, and engineering concepts for elementary-age learners.

Regional science and discovery center with interactive exhibits on physics, earth science, and space — includes a planetarium for astronomy and math curriculum.

Large urban aquarium restaurant complex with stingray touch tanks and shark exhibits — marine biology and aquatic ecosystem study.

Evening bat emergence tours at a Hill Country cave — covers chiropteran biology, echolocation, and insectivore ecology.

Aviation and aerospace museum with aircraft exhibits covering aerodynamics, engineering history, and the physics of flight.

Public observatory in Brazos Bend State Park with 36-inch telescope and viewing nights — covers astronomy, optics, and celestial mechanics.

Natural science museum with wildlife sanctuary — covers Texas ecology, native wildlife biology, and habitat conservation.