Under the aegis of Ulugh Beg in 1434
Ivans and minarets was built. During his reign the mausoleum became the family crypt of the
Timurid Dynasty.
All the extensions of Ulugh Beg's time are attributed to the architect Muhammad ibn Mahmud from Isfahan.
The entrance portals of Gur-Emir Ensemble are richly decorated with carved bricks and various mosaics.