Classified for credit

Historic college observatory with public viewing sessions — covers astronomy, telescope optics, and celestial mechanics.

Natural history museum within Morro Bay State Park — covers Central Coast marine biology, local geology, and the ecology of Morro Bay estuary.

Summit museum atop Mount Diablo covering regional geology, ecology, and the mountain's extraordinary 360-degree geographic sightlines.

Historic hard-rock copper mine in Butte's National Historic Landmark District — covers mining geology, ore extraction methods, and industrial labor history.

Member-run dark-sky observatory with public programs in the San Bernardino Mountains — covers optics, stellar astronomy, and observational technique.

Community observatory in Delaware with public telescope nights — covers observational astronomy, optics, and celestial mechanics through hands-on stargazing.

Artisan chocolate-making operation — covers cacao-to-chocolate production process, food science, and small-scale manufacturing.

Artisan mozzarella factory in Dallas offering production tours — covers food science, dairy chemistry, and small-batch manufacturing processes.

Live-animal education program featuring reptiles, insects, and small mammals — covers zoology, adaptations, and wildlife biology.

Michigan State University campus observatory open for public viewing nights — covers telescope optics, stellar classification, and observational astronomy.

Full-dome digital planetarium at Morehead State's Space Science Center — covers astronomy, space exploration, and planetary science.

University-operated planetarium with public shows covering astronomy, space science, and celestial navigation — supports earth science and mathematics curriculum.

Public observatory with scheduled viewing nights and educational programs — covers telescope optics, planetary science, and observational astronomy.

Community observatory near New London, MN offering public stargazing — telescope mechanics, celestial navigation, and observational astronomy.

Museum dedicated to Florida's phosphate mining industry covering geology, mineralogy, and the economic history of industrial extraction.

Campus planetarium offering astronomy and space-science programming — covers celestial mechanics, star life cycles, and observational math.

Coastal Carolina natural-history museum with marine specimens and exhibits covering local ecosystems, marine biology, and barrier-island geology.

University natural history museum at CMU with geology, paleontology, and cultural collections — supports earth science, biology, and archaeology units.

Earth science museum at Santa Fe College in Gainesville — covers mineralogy, petrology, and geologic processes through specimen collections and exhibits.

Museum dedicated to aviation history and aerial firefighting aircraft — aeronautical engineering, flight mechanics, and applied forestry-service history.

University-housed geology museum with fossil, mineral, and rock collections — covers earth science, paleontology, and stratigraphy.

Interactive illusion museum exploring the science of perception, optics, and how the human brain processes visual information.

Interactive illusion museum using optical phenomena to demonstrate principles of perception, light, and visual neuroscience.

Interactive museum of optical illusions and perception science — covers visual psychology, geometry, and how the brain processes spatial information.