Kitt Peak has the largest collection of optical telescopes in the world. Pick up a map at the Visitor Center and take the self-guided tour between 9am and 4pm. There is also a one hour guided tour. The guided tours are at 10am, 11am and 1:30pm. Admission and tours are free, but donations at the Visitor Center are welcome. The summit of Kitt Peak is at an elevation of 6,875 feet. The observatory is located 56 miles southwest of Tucson via State Route 86, then take Hwy 386 up to the mountain. Temperatures on Kitt Peak are 10 to 20 degrees cooler than in Tucson, so come prepared with warm clothing.