Classified for credit

National observatory visitor center with daytime and nighttime telescope programs — covers astronomy, optics, astrophysics, and the science of light.

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.

Railroad heritage park with antique locomotive rides, a model-train museum, and a carousel — covers railroad history and early transportation technology.

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

NPS monument preserving a 12th-century Sinagua cliff dwelling — covers pre-Columbian Native American architecture, archaeology, and Southwest indigenous history.

Navajo Nation visitor center set within iconic sandstone buttes — covers Diné cultural history, geology of the Colorado Plateau, and Southwest geography.

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.

Only tribally owned and operated zoo in the US — wildlife biology, conservation, and Navajo Nation cultural context.

National Monument preserving 13th-century Ancestral Puebloan cliff dwellings — covers archaeology, Native American history, and Southwest geography.

Sonoran Desert national monument with rare organ pipe cactus habitat — covers desert ecology, geology, and Sonoran biodiversity.

Wildlife park featuring large predators and exotic animals in open habitats — covers animal biology, behavior, and conservation.

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

Sinagua cliff dwellings and pictograph panels managed by the USFS — covers pre-Columbian archaeology, ancient Southwest cultures, and indigenous rock-art traditions.

Major encyclopedic art museum with permanent and rotating exhibits spanning art history from antiquity to contemporary works.

Sonoran Desert state park with a volcanic plug peak and Civil War battle site — covers desert ecology, geology, and Arizona territorial history.

Living-history museum north of Phoenix with reconstructed pioneer-era buildings — covers Arizona territorial settlement, crafts, and 19th-century rural life.

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

1.25-million-acre national forest covering diverse Arizona ecosystems — supports field study of conifer ecology, geology, and elevation-driven climate zones.

Natural sandstone arch monument sacred to Navajo Nation — covers geology, erosion processes, and Native American cultural geography.