🇺🇿 Uzbekistan · Archaeological wonder
Ulugbek Observatory
Timurid 1420–1449 · Timurid / Islamic Golden Age science
Timurid astronomical observatory (1420–1429) built by Muhammad Taragay Ulugbek, grandson of Timur, housing 40 m radius sextant embedded in 30 m hill-rock and 11 m underground to measure solar…