Welcome to Williams

Historical marker location:

200 W Railroad Ave, Williams, Arizona

( Marker can be reached from West Railroad Avenue west of North Grand Canyon Boulevard.)

Gateway to the Grand Canyon.

The world's largest solar telescope is located in Arizona: The Daniel K. Inouye Solar Telescope, located on the summit of Haleakala in Maui, Hawaii, is the largest solar telescope in the world. However, the next largest solar telescope, the McMath-Pierce Solar Telescope, is located at the Kitt Peak National Observatory in Arizona.