The Irmandiño siege of Vimianzo castle Historical milestone · Vimianzo, Terra de Soneira, A Coruña Image of Vimianzo, not of the place itself. The irmandiña revolt besieged and pulled down the Moscoso fortress in 1467. During those years archbishop Alonso II de Fonseca was held prisoner in it inside a cage, one of the most cited episodes of the conflict. 1465-1467 Photo: Estevoaei (CC BY-SA 4.0) What to see and do in Vimianzo