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.
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.onwy Castle (Welsh: Castell Conwy, English: Conway Castle) is a medieval fortification in Conwy, on the north coast of Wales.