Siruzkoh, a (possibly mythical) city destroyed in 1222 by Genghis Khan, is thought to be the former capital of Afghanistan. Its existence and location have been in dispute, although the international expedition or archeologists, geographs and writers "Expedition Culturelle et Scientifique Sur la Route de la soie" under the patronage of Unesco claimed to have rediscovered its whereabouts during an expedition to Afghanistan in 2003.
References
Siruzkoh Wikipedia(Text) CC BY-SA