There is no such thing as Islamic architecture and art. What you see is the work of Persians! Iran (Persia) was attacked by Arabs. Cities were pillaged and women and children enslaved and raped. Islam forced itself onto Iran. It took centuries until Iranians decided to create their version, a more moderate and tame version of Islam in their country. So they built the mosques and holy sites with a new architecture which was later wrongly named Islamic. Islam is fantastic at a few things and art, architecture, basic human decency and common sense are not included in that list.