Plymouth is a city in Devon in the South West of England. A historic maritime city, Plymouth, lies at the mouths of the rivers Plym and Tamar and at the head of one of the world's largest and most spectacular natural harbours. One of the few remaining naval dockyards in Britain and the largest naval base in Western Europe, Plymouth's harbour not only supports naval and maritime industries but also forms a focal point for a wide range of activities and events that include the prestigious World Championship Class 1 Powerboat Racing. Plymouth city centre is a joy with clean, traffic free boulevards that have a range of shops, cafes and restaurants that enjoy a relaxed daytime atmosphere while Plymouth at night comes alive with regular theatre and performance on offer at the city's Theatre Royal and Plymouth Pavillions venues as well as a myriad of bars, pubs and clubs to keep you busy well into the early hours.