The entrance portal of the Registan's Sher Dor (Lion) Medressa, opposite the Ulugbek Medressa and finished in 1636, is decorated with roaring felines that look like tigers but are meant to be lions. The lions, the deer they are chasing and the Mongolian-faced, Zorostrian-inspired suns rising from their backs are all unusual, flouting Islamic prohibitions against the depiction of live animals. It took 17 years to build but hasn’t held up as well as the Ulugbek Medressa, built in just three years.