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.
Towers of Conwy Castle, North Wales. Climb to the top of one Conwy castleâs 8 towers to get a stunning view of Conwy, and then explore the inner and outer wards with their many rooms.Or for free, explore the castle walls with their 21 towers that enclose Conwy town.1  B.limb to the top of one Conwy castleâs 8 towers to get a stunning view of Conwy, and then explore the inner and outer wards with their many rooms. Or for free, explore the castle walls with their 21 towers that enclose Conwy town. 1  B.