Akasaka Palace
Approximately 20% of the National Treasures are structures such as castles, Buddhist temples, Shinto shrines, or residences. The other 80% are paintings; scrolls; sutras; works of calligraphy; sculptures of wood, bronze, lacquer or stone; crafts such as pottery and lacquerware carvings; metalworks; swords and textiles; and archaeological and historical artifacts. The items span the period of ancient to early modern Japan before the Meiji period, including pieces of the world's oldest pottery from the Jōmon period and 19th-century documents and writings. The designation of the Akasaka Palace in 2009, the Tomioka Silk Mill in 2014 and of the Kaichi School added three modern, post-Meiji Restoration, National Treasures.