Citadel of Herat

Supposedly there has been a citadel on this site in Herat since before the times of Alexander the Great.  Supposedly Alexander the Great himself garrisoned troops on this site, though it would have been little more than a mud fort at that time.  But before the time of Tamburlaine this citadel had grown, had progressed beyond packed, dried mud to include kiln-fired bricks and more or less the shape of today's recreation.  The foundations are 14th century or so; the tiles on the towers are also Timurid, but most of what you see is a reconstruction that continues today.