Classified for credit

Decommissioned Navy submarine USS Albacore open for tours — covers submarine engineering, fluid dynamics, and Cold War naval history.

Restored 19th-century grist mill with working machinery — demonstrates grain milling mechanics, water-powered engineering, and local agricultural history.

Amateur astronomy club hosting public observing nights with telescopes — covers observational astronomy, celestial navigation, and the electromagnetic spectrum.

Private planetarium offering guided astronomy tours — covers celestial mechanics, star identification, and planetary science through telescope and dome presentation.

Historic research observatory open for public tours — covers telescope optics, stellar astronomy, and the history of observational astronomy.

Campus planetarium at Indiana State University with dome shows — covers celestial mechanics, the solar system, and observational astronomy.

Amateur astronomy club offering public star parties and telescope observation — covers celestial mechanics, constellation identification, and observational astronomy.

Amateur astronomy club with public star parties at a dark-sky site — covers optics, telescope mechanics, and observational astronomy.

Museum with 1,500+ timepieces spanning 300 years — covers mechanical engineering, gear ratios, and the history of precision timekeeping.

Museum tracing the history of computing from abacus to modern processors — covers computer science, mathematical logic, and technology innovation.

Museum dedicated to maple sugar production — covers tree biology, sap chemistry, boiling-point science, and the agricultural history of New York's North Country.

Museum situated within a meteor impact crater site — covers planetary geology, impact cratering, and geomorphology in a real-world context.

International dam and reservoir on the Rio Grande operated by the U.S. and Mexico — covers hydrology, water management, dam engineering, and border geography.

Michigan Tech university observatory with public viewing sessions — covers observational astronomy, telescope optics, and stellar physics.

Campus planetarium at Marietta College offering public sky shows — astronomy, celestial mechanics, and the physics of light and optics.

University-operated observatory open to the public — covers telescope optics, celestial mechanics, and observational astronomy.

Working chocolate factory with public tours — covers food-production processes, candy chemistry, and small-business economics.

University planetarium offering public sky programs — covers stellar astronomy, planetary science, and celestial navigation concepts.

Small ornamental fish hatchery in South Florida — covers aquaculture, fish reproduction, and applied aquatic biology.

Zoo and reptile facility with live snake and exotic animal exhibits — herpetology, animal adaptation, and wildlife biology.

Public aquarium at URI's Bay Campus featuring local marine species — covers marine biology, coastal ecology, and saltwater adaptations.

Natural history museum with vertebrate fossil, bird, and ethnographic collections — paleontology, evolutionary biology, and Alabama natural history.

Open-air museum of working antique gas and steam-powered farm equipment — covers mechanical engineering history, thermodynamics, and agricultural technology.

Professional research observatory in the Sacramento Mountains offering public programs — covers optics, spectroscopy, and astrophysics at an advanced level.