The Pioneer Museum in Flagstaff is located in the historic Coconino County Hospital for the Indigent. The Hospital was built in 1908 using pumiceous dacite from an explosive eruption of Mount Elden about 500,000 years ago. The building was used as a hospital until 1938. The land surrounding the hospital was previously the county Poor Farm.

The exhibits within the museum reflect the history of Flagstaff and Northern Arizona. Visitors will learn of the local history of ranching, logging, transportation and life in pioneer Flagstaff.