Firozkoh (Persian/Pashto: فیروزکوه, Fīrōzkōh), or Turquoise Mountain, is the lost capital of the Ghorid dynasty, in the Ghor Province of central Afghanistan. It was reputedly one of the greatest cities of its age, but was destroyed by Ögedei Khan, son of Genghis Khan, in the early 1220s and lost to history.