If you’re fond of castles, you’ll have plenty to keep you busy in both the UK and Ireland, from urban castles such as Edinburgh Castle in Scotland and Dublin Castle in the Irish capital to coastal Ireland’s Dunguaire Castle and Eilean Donan Castle, on a loch island in the Scottish Highlands. England naturally has plenty of castles of its own, including Windsor Castle, which is used as a royal residence to this day. Wales is equally chock-full of medieval castles, including Conwy Castle and Caerphilly Castle, both of which have serious storybook appeal, as well as Caernarfon Castle and Pembroke Castle.