The remains of Ulugbek’s Observatory is one of the great archaeological finds of the 20th century. Ulugbek was probably more famous as an astronomer than as a ruler. His 30m astrolab, designed to observe star positions, was part of a three-storey observatory he built in the 1420s. All that remains now is the instrument’s curved track, unearthed in 1908. The small on-site museum has some miniatures depicting Ulugbek and a few old ceramics and other artefacts unearthed in Afrosiab.