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 (also known as Conway Castle) was built by Edward I in the thirteenth century. It was designed to watch over the walled town of Conwy and formed part of Edward Iâs plan to establish a new English colony on a significant Welsh site.Here are ten Conwy Castle facts.1  Conwy Castle was built between 1283 and 1287. 2  Construction of the Conwy town walls were constructed when the castle was nearing completion. 3  The castle and town were designed to function as one, the perimeter walls bonding the town to the castle.ere are ten Conwy Castle facts. 1  Conwy Castle was built between 1283 and 1287. 2  Construction of the Conwy town walls were constructed when the castle was nearing completion. 3  The castle and town were designed to function as one, the perimeter walls bonding the town to the castle.