It was named after its founder, a Turkic astrologer and astronomer. Here, in the 30s of the 14th century, an astronomical catalog with more than a thousand stars was compiled. It was given the name of Gurgan zij. The medieval historical monument was found in 1908 on Kuhak Hill. A complete study had to wait about 40 years. The observatory was reconstructed. One of the valuable finds is a sextant of impressive size.
Ulugbek Observatory
