the historic rocca di tentennano, an impressive defensive structure in the heart of tuscany

rocca tentennano fortress val 039 orcia medieval history citadel defense siena sentinels panoramic view castles architecture heritage defensive walls scenic beauty tower hilltop stone structure battlements historical site tuscany system monument landmark ancient sienese republic fortified warfare watchtower protective hillside strategic location hill significance cultural impressive battlemented stronghold overlook bastion towering vantage point turret historic heart symbol