Single (music) - Types. 1  Singles have been issued in various formats, including 7-inch (18 cm), 10-inch (25 cm), and 12-inch (30 cm) vinyl discs (usually playing at 45 rpm); 10-inch (25-cm) shellac discs (playing at 78 rpm); cassette, 8 and 12 cm (3- and 5-inch) CD singles and 7-inch (18 cm) plastic flexi discs.
Conwy Castle. Conwy Castle, a World Heritage Site, is a magnificent fortress in North Wales. Built by James Saint George for King Edward I, it has towered over the medieval town of Conwy ever since.onwy Castle. Conwy Castle, a World Heritage Site, is a magnificent fortress in North Wales. Built by James Saint George for King Edward I, it has towered over the medieval town of Conwy ever since.
Stone castles were an evolution of the early 'Motte and Bailey' castle design. The simple Motte and Bailey was brought to England by the Normans in 1066, and the design consisted of a defensive mound with buildings on the flat-top.The Motte and Bailey was quick to construct, but was generally made of wood.tone castles were an evolution of the early 'Motte and Bailey' castle design. The simple Motte and Bailey was brought to England by the Normans in 1066, and the design consisted of a defensive mound with buildings on the flat-top.