Time and Tide S2022E06 - SAMURAI CASTLES: Tenshu - The Tower Keep

Castles offer insights into Japanese history and spirituality. Tower keeps, or Tenshu, first appeared in Japan when a powerful lord fortified his castle with a tall tower during the turmoil of 500 years ago. Their stone-walled bases were built without binding agents, their designs held devices to defend the castle during sieges, and their grandeur exuded power and authority. History and castle buff Chris Glenn reveals the Tenshu's secrets, focusing on designated-National-Treasure Inuyama Castle.