Casa de las Argollas de Plasencia Monument · Plasencia, Comarca de Monfragüe y su Entorno, Cáceres A building where, according to historical tradition, the wedding of Juana la Beltraneja and Afonso V of Portugal was held on 29 May 1475. 29 de mayo de 1475 Photo: Zarateman (CC0) What to see and do in Plasencia