Ruined Castle (Cromwell's Barracks), used by pirates Don Bosco and Grace O'Malley, Inishbofin Island, Connemara, County Galway, Connacht, Republic of Ireland

castle ruins inishbofin island ireland pirates grace o'malley don bosco harbour connemara history cromwell architecture stone walls tourism historical site lush landscape coastal view irish heritage military base fortification vegetation scenic ancient exploration maritime cultural significance galway connacht barracks travel nature green grass rock formations sea adventure preserved outdoor landmark