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.
ords cannot do justice to Conwy Castle. The best, simple description is found in the guidebook published by CADW, the Welsh Historic Trust, which states: Conwy is by any standards one of the great fortresses of medieval Europe.. Conwy along with Harlech is probably the most impressive of all the Welsh castles. oday, Conwy is approached from the east via the A55 through North Wales. The beauty of this section of the country rivals anything in Britain. Approaching Conwy, the castle seems to suddenly rise out of the hills.