Historically, architecture is the first art could adapt itself to Islamic concepts, which has welcomed by Muslims.
The shrine of Imam Reza in Mashhad is one of the most famous religious buildings in Iran.
The architecture used in the shrine of Imam Reza is considered as the pure Islamic art. This shrine includes dome, minarets, finials, porches, museums and library. The inner surface of the dome is decorated with stalactite and the outer surface is covered with copper clay and a layer of gold.
Here is the picture of Azadi (Freedom) courtyard which is located in the eastern part of the Holy Shrine.