The largest collection of optical telescopes in the world, on Tohono O'odham land at 6,880 feet, hosting more than twenty telescopes operated by different institutions.
This place scores 53.0 out of 100, at medium confidence. No official visitor count is published for it, so the score rests on public interest and tourism significance, and is capped below the level a measured attraction can reach. The weighting is explained in full on the methodology page.
Note on the data: No official visitor count is published for this attraction.
Sources
Public interest: Wikimedia pageviews (en.wikipedia, human traffic), 2024
McMath–Pierce solar telescope is a 1.6 m f/54 reflecting solar telescope at Kitt Peak National Observatory in Arizona, United States. Built in 1962, the building was designed by American architect Myron Goldsmith and Bangladeshi-American structural engineer Fazlur Rahman Khan. It was the largest solar telescope and the largest unobstructed aperture optical telescope in the world.
The Nicholas U. Mayall Telescope, also known as the Mayall 4-meter Telescope, is a four-meter (158 inches) reflector telescope located at the Kitt Peak National Observatory in Arizona and named after Nicholas U. Mayall.
This remote wilderness area is on the eastern side of the Baboquivari Mountain Range 50 mi (80 km) southwest of Tucson, and is administered by the Bureau of Land Management. It is notable for the spectacular Baboquivari Peak which is sacred to the Tohono O’odham people, and is clearly visible from nearby Kitt Peak National Observatory (see listing above).
Managed by the US Fish and Wildlife Service, this was established in 1986 for the reintroduction of masked bobwhite quail and pronghorn antelope. A number of other mammals and avian species are well-established here, making this an excellent place for watching birds and wildlife.
Part zoo, part botanical garden and part natural history museum, presenting the Sonoran Desert ecosystem largely outdoors along two miles of walking paths.
