Kızılırmak River
Hattusa (also Ḫattuša or Hattusas ; Hittite: URU"Ḫa-at-tu-ša", Hattic: Hattush) was the capital of the Hittite Empire in the late Bronze Age. Its ruins lie near modern Boğazkale, Turkey, within the great loop of the Kızılırmak River (Hittite: "Marashantiya"; Greek: "Halys").