Persia has been a center of civilization for at least 7000 years. Iran art as one of the richest art heritages in the world history and encompasses many disciplines including Calico (Ghalamkar), Gerehchini, Making National Musical Instruments of Iran (Tar & Setar), Silverwork, Woodcarving, Engraving (Ghalamzani), Inlaid work, Miniature, Tile working, Writing and calligraphy and pottery. Iranians were among the first nations who use geometry, astronomy and mathematics in architecture and have wonderful skills in making massive domes and you still can visit in the structure of bazaars and mosques.