Lowell Observatory
About
Lowell Observatory, 1400 West Mars Hill Rd., [9]. An astronomical research center at which the dwarf planet Pluto was discovered, this historic institution is on a mesa overlooking the west side of town. The staff leads guided daytime tours, and visitors use the Observatory's 24" Clark telescope and smaller portable telescopes during regular evening programs (inquire). Open 9AM-5PM daily and from 5:30PM (regular evenings) except some holidays. An entrance fee is payable.