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.
From Wikipedia, the free encyclopedia. Conwy Castle (Welsh: Castell Conwy, English: Conway Castle) is a medieval fortification in Conwy, on the north coast of Wales. It was built by Edward I, during his conquest of Wales, between 1283 and 1289.Constructed as part of a wider project to create the walled town of Conwy, the combined defences cost around Â£15,000, a huge sum for the period. Over the next few centuries, the castle played an important part in several wars.t was built by Edward I, during his conquest of Wales, between 1283 and 1289. Constructed as part of a wider project to create the walled town of Conwy, the combined defences cost around Â£15,000, a huge sum for the period. Over the next few centuries, the castle played an important part in several wars.