Classified for credit

Harvard's research collection of over 21 million zoological specimens — supports taxonomy, evolutionary biology, and comparative anatomy.

Harvard's natural-history museum with mineralogy, zoology, and paleontology collections — applied taxonomy, geology, and evolutionary biology.

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

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

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

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

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

University-affiliated natural history museum with paleontology, anthropology, and geology collections — strong Idaho prehistory and fossil curriculum content.

Hands-on science center with interactive exhibits covering physical and life sciences — supports broad elementary and middle-school STEM curriculum.

Planetarium and astronomy center near Mauna Kea covering telescope science, Hawaiian star navigation, and space exploration curriculum.

Free Intel-operated museum tracing the history of semiconductor manufacturing and microprocessor development — covers computer science, electrical engineering, and technology history.

Dedicated owl education center with live ambassador birds — covers raptor biology, adaptations, prey-predator ecology, and conservation.

Earlham College natural history museum housing dinosaur fossils, Pleistocene mammals, and geology specimens — covers paleontology, taxonomy, and Indiana natural history.

Kazoo Factory tour in Eden, NY — sound-physics, musical-instrument manufacturing, and a working factory floor.

Regional science center in Louisville with hands-on exhibits covering physics, biology, and technology — broad STEM curriculum support.

San Francisco maker and biotech community lab offering workshops in biology, electronics, and fabrication — covers applied science and engineering design process.

Commercial cave tour in Pennsylvania — covers karst geology, speleothem formation, and groundwater hydrology in an accessible underground setting.

Guided tours of active limestone caverns in central Pennsylvania — covers geology, speleology, cave formation, and karst hydrology.

Guided tours through active limestone caverns in the Blue Ridge Mountains — covers speleology, karst geology, and cave ecosystem biology.

Lost River Gorge features glacially carved flume and boulder caves in NH's White Mountains — covers geology, glaciation, and geomorphology through self-guided tours.

Museum in Mammoth Lakes area documenting mammoth fossil discoveries — covers paleontology, Pleistocene megafauna, and Eastern Sierra geological history.

Iowa state park with 13 developed limestone caves — covers karst geology, speleology, cave ecosystems, and physical geography through self-guided and ranger programs.

Museum at the C.F. Martin Guitar factory covering instrument-making history, acoustic science, and American craft manufacturing since 1833.

Museum inside a working Chicago River lift bridge — covers hydraulic engineering, bridge mechanics, and the role of the river in urban development.