Classified for credit

Fort Collins hands-on discovery museum blending natural history and science exhibits — covers local ecology, earth science, and interactive STEM concepts.

Interpretive center at Fort Peck Dam and Reservoir — paleontology exhibits, dam engineering, and Missouri River ecology.

IA fossil and prairie center — paleontology dig site (Devonian fossils) and tallgrass prairie restoration.

National monument preserving one of the world's richest Eocene freshwater fossil deposits — paleontology, geology, and stratigraphy.

NPS visitor center for a 50-million-year-old lake-bed fossil site — covers paleontology, stratigraphy, and Eocene-era ecosystem reconstruction.

Coral aquaculture and reef-fragment propagation facility — covers marine biology, coral reef ecology, and applied aquaculture science.

Mineral museum with fluorescent mineral collection and public dig site — covers mineralogy, geology, and crystallography.

SAO/CfA research observatory on Mt. Hopkins with public tours — covers optical telescope engineering, astrophysics research methods, and atmospheric optics.

Hands-on children's science and discovery center in Fresno — interactive exhibits cover physical science, biology, and early STEM concepts.

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.

Live butterfly house and bug zoo covering insect taxonomy, metamorphosis, and arthropod biology with hands-on specimens.

One of the largest indoor botanical conservatories in the US, with fern, palm, and aroid houses illustrating plant biology and photosynthesis.

Gemini North base facility in Hilo offering public tours of the support center for one of the world's largest optical telescopes — covers observational astronomy and telescope engineering.

University of Wyoming geology museum with dinosaur specimens and mineral collections — covers paleontology, stratigraphy, and regional Rocky Mountain geology.

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

Sea turtle rehabilitation and research center on Jekyll Island, GA — covers marine biology, sea turtle life cycles, conservation medicine, and coastal ecology.

University natural history museum featuring a Cretaceous mosasaur fossil and Georgia wildlife specimens — paleontology, regional ecology, and natural history.

Working ranch and education center in Ghost Ranch country — features fossil beds (including Coelophysis), geology hikes, and paleontology programs.

Open-deck observatory at Lowell — public night-sky telescope viewing and astronomy education.

Fossil museum in eastern Montana with actual dinosaur specimens and fossil prep lab — covers paleontology, stratigraphy, and Cretaceous-period geology.

Public planetarium and dark-sky park with telescope observing programs — covers astronomy, optics, and the science of light in a designated dark-sky zone.

State park observatory with a 24.5-inch reflecting telescope open for public viewing — covers astronomy, optics, and celestial observation techniques.

Underground cave tour in the Red River Gorge area — karst geology, speleology, and Appalachian hydrology.