Classified for credit

MIT Haystack Observatory with radio telescopes and research facilities — covers radio astronomy, electromagnetic spectrum, and astrophysics.

Designated International Dark Sky Park on Lake Michigan — covers light pollution, astronomy, and naked-eye observation of stars and the Milky Way.

Interactive river and watershed education center — covers hydrology, Colorado River ecology, and water-resource science.

Hands-on science center in Bemidji — interactive exhibits cover biology, physics, and local natural history for K-12 learners.

Santa Monica Pier aquarium focusing on Santa Monica Bay marine life — covers ocean ecology, invertebrate biology, and local watershed science.

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

Guided factory tour of a large-scale snack food production facility — covers food science, manufacturing processes, quality control, and supply-chain economics.

College-affiliated museum in Twin Falls with planetarium, anthropology, and natural-science collections — covers astronomy, archaeology, and regional natural history.

Coastal science center on the St. George Peninsula with aquaculture, marine biology, and ocean-ecology programs tied to the working fishing industry.

Factory tour and interactive attraction at Hershey showing cocoa-to-chocolate production — covers food science, manufacturing, and agricultural supply chains.

Active cave system with museum covering karst geology, hydrology, and cave ecology alongside conservation history.

Restored WWII-era and early-aviation aircraft with hands-on exhibits — covers aerodynamics, engineering history, and the physics of flight.

One of the world's largest optical telescopes with a visitor center — covers optics, spectroscopy, and astrophysics research methods.

Public planetarium offering sky shows and astronomy programming — covers celestial mechanics, space science, and observational math.

Butler University observatory with a 38-inch reflector telescope and planetarium — covers astronomy, optics, and observational astrophysics.

National park built around 47 thermal springs — covers geothermal geology, hydrology, and early federal conservation history.

Geothermal hot-spring bath house in Wyoming state park — demonstrates geochemistry, hydrothermal geology, and mineral content of thermal waters.

Wyoming state park featuring the largest hot springs in the world — geothermal geology, thermophilic biology, and hydrological science.

Interactive aquarium and animal preserve north of Houston with touch tanks and live animal encounters — marine biology, animal adaptation, and aquatic ecosystems.

Satellite branch of Houston's top-ranked natural science museum with geology, paleontology, and space science exhibits.

Omaha Zoo's gorilla habitat featuring one of the largest indoor gorilla exhibits in the U.S. — covers primate behavior, great ape biology, and conservation.

Working family farm offering seasonal crop tours and agricultural education — covers plant biology, food production, and farm ecology.

National geologic trail marking the path of Ice Age megafloods — covers glaciology, geomorphology, and catastrophic landscape formation.

Nevada state park preserving Pleistocene-era fossil beds — covers paleontology, Ice Age megafauna, and geological time scales.