Classified for credit

Historic gristmill demonstrates grain-to-flour milling mechanics, water power, and 19th-century agricultural technology in a hands-on setting.

Working maple farm offering tours on sap collection and syrup production — covers plant biology, agricultural chemistry, and food science.

Natural and cultural history museum at Maramec Spring Park — covers Ozark geology, iron industry heritage, and regional ecology.

Spring-fed trout hatchery and historic ironworks site — covers aquatic biology, water chemistry, and 19th-century iron production.

IMAX theater at Marbles Kids Museum in Raleigh — large-format science and nature films support STEM content across multiple subject areas.

Public planetarium at Catawba College with dome shows covering astronomy, the solar system, and celestial mechanics.

Public observatory at Warwick City Park — telescope optics, celestial mechanics, and observational astronomy.

Public planetarium operated by the state school district — covers astronomy, celestial mechanics, and observational science.

Marine aquarium retail and display facility — supports marine biology, fish taxonomy, and saltwater ecosystem study.

Public observatory at Illinois Wesleyan University — covers telescope optics, celestial observation, and introductory astronomy.

Public planetarium offering sky programs covering astronomy, Earth's place in the solar system, and celestial mechanics.

University-operated planetarium with full-dome sky shows — covers solar system mechanics, stellar evolution, and observational astronomy.

Johns Hopkins public observatory — telescope operation, stellar observation, and applied astrophysics on a working university campus.

Preserved 19th-century grist mill with working water-powered milling equipment — demonstrates grain milling mechanics and Pennsylvania agricultural history.

Full-dome planetarium with sky programs covering astronomy, star navigation, and the scale of the solar system.

Desert museum near China Lake featuring geology, Native American archaeology, and Mojave Basin natural history exhibits.

Community planetarium serving the Greater New Orleans area — covers astronomy, the solar system, and celestial navigation through live and pre-programmed sky shows.

Private natural-history museum with one of the largest insect collections in the US — entomology, invertebrate biology, and biodiversity classification.

Campus planetarium offering curriculum-aligned sky shows covering astronomy, the solar system, and space science.

College-based public planetarium with sky shows — covers astronomy, the solar system, celestial mechanics, and observational math.

Campus observatory at DePauw University open for public viewing — covers telescopic astronomy, optics, and celestial mechanics.

Historical research observatory offering public programs — solar observation, telescope optics, and the history of early 20th-century American astronomy.

School-district planetarium open to public — astronomy curriculum covering star cycles, solar system, and night-sky navigation.

Community college planetarium offering dome shows on astronomy, space science, and celestial mechanics.