One of the most impressive architectural features of the mausoleum is the circular dome covering the main hall, whose surface is covered in colourful mosaic which forms intricate ornamental patterns consisting of flowers and stars, creating a visual metaphor for the heavens. No comparable contemporary parallels can be found at Urgench, as some of the architectural features, such as the decorations mentioned above, do not appear in other monuments built during the lifetime of Turabek-Khanum, around 1330. Thus, it is difficult to date the building so early. These features do, however, appear in Central Asia later, during the reign of Timur, a warlord of Turco-Mongol descent. New technologies, such as mosaic faience, show up in Timur's earliest buildings, such as the Aq Saray palace in Shahrisabz, in Uzbekistan, which was begun in 1379 but was still unfinished in 1404.