The best museums in Flagstaff in September 2025

These are the top 5 best museums in Flagstaff, United States, ranked by their rating and popularity in 2025. Click a museum for more information about the museum, including visitor information, exhibitions and reviews.

For a complete overview of museums in Flagstaff, their exhibitions and discount cards & passes, see our overview page with all museums in Flagstaff.

Looking for the best museums in Flagstaff? These are the best ones:

  1. Lowell Observatory1

    Lowell Observatory

     Flagstaff, AZ
    Lowell Observatory is an astronomical observatory situated in Flagstaff, Arizona. It is one of the oldest observatories in the United States and is listed as a building of historical interest. The observatory welcomes up to 70,000 visitors a year who participate in guided tours and observe various night wonders through the Clark telescope and others.
  2. The Arboretum at Flagstaff2

    The Arboretum at Flagstaff

     Flagstaff, AZ
    The Arboretum at Flagstaff is a unique botanical garden that spans over 200 acres. It is home to a variety of drought-tolerant plants that are representative of the high desert area of the Colorado Plateau. This makes it a unique destination for those interested in botany, ecology, or simply enjoying the beauty of desert flora.
  3. Museum of Northern Arizona Flagstaff3

    Museum of Northern Arizona Flagstaff

     Flagstaff, AZ
    The Museum of Northern Arizona, located in Flagstaff, Arizona, serves as a repository for Indigenous artifacts and natural history specimens from the Colorado Plateau. This museum is a significant destination for those interested in learning about the Indigenous cultures and natural history of the region.
  4. 4

    Sunset Crater Volcano Visitor Center

     Flagstaff, AZ
  5. Arizona Historical Society Pioneer Museum5

    Arizona Historical Society Pioneer Museum

     Flagstaff, AZ
    The Arizona Historical Society (AHS) is a non-profit organization that aims to connect people through the power of Arizona's history. This mission is carried out through four regional divisions, each with a representative museum. The divisions are located in Tucson, Tempe, Flagstaff, and Yuma. The society was founded in 1884 by a group of pioneers who wanted to preserve their stories and provide charitable service to the local community.

All museums in Flagstaff