Harquahala Peak Observatory was built in 1920 by the Smithsonian Astrophysical Observatory to measure and record solar activity. Although deserted now, from 1920-1925 a hardy group of scientists lived and worked atop the highest mountain in southwestern Arizona (5,681-foot elevation). How these individuals lived, worked, and relaxed up on this peak, struggling with its seclusion and weather, represents an enlivened story of dedicated scientific pursuit and American inventiveness. Visit the…
Harquahala Peak Observatory is primarily first-come, first-served. Use the availability view to gauge how busy it is before you go.
See the map for Harquahala Peak Observatory's exact location and directions.
Pick your dates on the availability calendar, then reserve through the official booking link. You can also set an alert and we'll notify you if a sold-out date opens up.