Chester, UK

Chester sits on the River Dee in northwest England, home to roughly 91,000 residents and founded as the Roman fortress Deva Victrix in 70 AD. Its 3.2-kilometre city walls, dating from 907, form the most complete Roman and medieval circuit in Britain. The 13th-century Rows offer unique two-tier covered shopping galleries, while the 1092 Chester Cathedral displays Norman and Gothic architecture. The Eastgate Clock, added in 1897, ranks as the world's second-most-photographed clock after Big Ben. The 1354 Chester Racecourse remains the oldest still-operating course in England.