Classified for credit

World's largest binocular telescope on Mt. Graham — covers optical telescope engineering, interferometry, and observational astrophysics through guided summit tours.

Historic research observatory where Pluto was discovered — covers astronomy, telescope optics, and the history of planetary science.

Historic refracting telescope at Lowell Observatory where Pluto was discovered — covers optics, astronomy history, and planetary science.

Public research-grade 1-meter telescope at Lowell Observatory — covers optics, stellar astronomy, and observational research methods.

Historic Lowell Observatory Perkins Telescope in Flagstaff — covers stellar astronomy, telescope optics, and the history of planetary science.

Base camp visitor area for Mount Graham International Observatory — covers radio and optical astronomy, astrophysics, and telescope engineering.

Public observatory atop Mt. Lemmon with guided stargazing and telescope access — covers astrophysics, optics, and observational astronomy.

Northern Arizona natural-history and anthropology museum — covers Colorado Plateau geology, Ancestral Puebloan archaeology, and regional Native cultures.

Petrified Forest National Park's Painted Desert badlands expose 225-million-year-old Triassic strata — covers geology, paleontology, erosion, and sedimentary processes.

Historic Lowell Observatory refractor used to discover Pluto in 1930 — covers planetary astronomy, history of science, and observational telescope methodology.

Rotunda museum at Lowell Observatory where Pluto was discovered — covers planetary science, telescope history, and the history of astronomy.

Public observatory at Kitt Peak area offering nighttime and daytime viewing programs — covers telescope mechanics, stellar astronomy, and astrophysics basics.

Guided dark-sky stargazing program in Sedona — telescope optics, constellation identification, and observational astronomy in a low-light-pollution environment.

Lowell Observatory's Steele Visitor Center in Flagstaff — covers planetary science, telescope optics, and the history of astronomy including Pluto's discovery.

National Monument preserving a 900-year-old cinder cone volcano near Flagstaff — covers volcanology, lava flow geology, and Ancestral Pueblo history.

Kitt Peak National Observatory solar telescope facility on Tohono O'odham Nation land — covers solar astronomy, optics, and spectroscopy through guided telescope access.

University-operated mountain observatory on Mt. Lemmon — covers telescope optics, astrophysics, and observational astronomy.

UA lab where some of the world's largest telescope mirrors are cast and polished — covers optics, materials science, and astronomical engineering.

USNO Flagstaff Station telescope facility — astrometry, stellar parallax measurement, and operational astronomical observatory science.

VERITAS gamma-ray telescope array at Mt. Hopkins — covers high-energy astrophysics, telescope technology, and particle detection; public tours available.

Federal agency managing water infrastructure in the West — visitor centers at Bureau dams cover hydraulic engineering, irrigation, and water policy.

EAC Discovery Park with observatory and natural history exhibits in the Gila Valley — covers astronomy, geology, and regional desert ecology.

University-operated observatory complex open for public viewing nights — covers telescope operation, astrophysics, and celestial mechanics at a working research facility.

Private collection of handbuilt miniature cars — covers scale engineering, metalworking, and mechanical design as applied art and craft.