Outwardly the Gur-e Amir Mausoleum is a one-cupola building. It is famous for its simplicity of construction and for its solemn monumentality of appearance. It is an octahedral building crowned by an azure fluted dome. The exterior decoration of the walls consists of the blue, light-blue and white tiles organized into geometrical and epigraphic ornaments against a background of terracotta bricks. The dome (diameter – 15 m (49.21 ft), height – 12.5 m (41.01 ft)) is of a bright blue color with deep rosettes and white spots. Heavy ribbed fluting gives an amazing expressiveness to the cupola.