Penrhyn Castle

The National Trust say: "This enormous neo-Norman castle sits between Snowdonia and the Menai Strait. Built by Thomas Hopper between 1820 and 1845 for the wealthy Pennant family, who made their fortune from Jamaican sugar and Welsh slate, the castle is crammed with fascinating things such as a one-ton slate bed made for Queen Victoria. Hopper also designed its interior with elaborate carvings, plasterwork and mock-Norman furniture. The castle contains an outstanding collection of paintings."