Among other cities, the mythical city of Firozkoh of the Gurid dynasty was wiped off the map. The Mongols had such a strong impact even on the archaeological consensus dictating that the minaret of Jam marks the spot where the Ghurid capital once stood, as there is no irrefutable proof of this. The mosque associated with the minaret had already been destroyed by a series of floods before the Mongol invasion. The area is the confluence of two rivers, the jam and the Hari rivers occasionally ha...