Hiraizumi in the southwestern part of Iwate Prefecture is a town extending up the Hiraizumi Hill on the west bank of the Kitakami-gawa River, that prospered for almost 100 years from the 11th to 12th centuries as the center of the Tohoku region. Over 3,000 national treasures and historical sites still remain, telling of the Fujiwara Clan that reigned over the area in the zenith of its prosperity. The Konjiki-do of Chuson-ji Temple, built by the Fujiwaras, is decorated inside and out with lacquer containing gold foil and studded with gold and silver, a symbol of the gold culture of Hiraizumi. The historical artifacts and Buddhist statues found in the Konjiki-do are stored in the Sanko-zo storehouse and displayed to the public. Many historical sites and buildings still remain around Hiraizumi.