At the summit of Kitt Peak, 56 miles southwest of Tucson, Ariz., the Kitt Peak Observatory claims to hold the largest collection of research telescopes in the world.
Visitors can look through only three of those telescopes, a 20-inch and two 16-inch reflecting telescopes.
The program operates nightly, except from July 15 through Sept. 1. A staffer will be on hand to guide the group, which is limited to 46 people per night. Fees: $39 for adults, $34 for students, seniors and those in the military.
For reservations, call (520) 318-8726 or go to the website.