One of the most beautiful examples of multi layered disign can be found in a tympan and spandrel of the Darb-i Imam schrine in Isfahan. Traditionally it’s dated in 1453. This indeed is the year in which the shrine was built. However it was renovated later. In an article in [url=https://www.nexusjournal.com/volume-20/volume-20-number-2-2018.html]Nexus Network[/url] Journal Luc Lauwers (KULeuven Belgium) argues that the entry with tympan and spandrel have to be dated in the expansion of the shrine in 1717. [list][*]Accentuating and extending the blue [i]line pattern[/i], we find a first layer of big girih tiles.[/*][*]Checking [i]division[/i] a second layer of smaller girih tiles appear.[/*][/list]