SASANIAN ARCHITECTURE: The last great pre-Islamic civilization of the Near East was that of the Sasanians. A blending of Roman and Near Eastern elements can be seen in Shapur I's palace at Ctesiphon, near Babylon.
I'm always soothed and refreshed by the spare sophistication of these small stone sitting rooms with Islamic patterns. (It moves me to alliterate, apparently.) Would definitely consider having a room inspired by this aesthetic in my own home.
Courtyard of the Madrasa al-Firdaus in Aleppo, The Madrasa al-Firdaus (School of Paradise) was founded by Daifa Khatun, the widow of the Ayyubid Sultan al-Malik al-Zahir Ghazi. It is probably the most beautiful Ayyubid building to have survived in Aleppo.