Looking to lord over some commoners for the weekend? We know just the place to do it. Castle Oliver is a privately-owned property that's available when the owners aren't home. Apart from being, you know, a castle, it boasts over 100 rooms, twelve staircases, the largest wine cellar in Ireland with room for over 55,000 bottles, a library, a ballroom, a billiards room, and a candlelit dining room. And it sleeps 16 — in dedicated rooms, which means enough space for you and at least 40 friends.