Plymouth ⁱ/ˈplɪməθ/ is a city and unitary authority area on the south coast of Devon, England, about 190 miles (310 km) south-west of London. It is situated between the mouths of the rivers Plym to the east and Tamar to the west, where they join Plymouth Sound. Since 1967, the City of Plymouth has included the suburbs of Plympton and Plymstock, which are on the east side of the River Plym.

Plymouth's history goes back to the Bronze Age, when its first settlement grew at Mount Batten. This settlement continued to grow as a trading post for the Roman Empire, until the more prosperous village of Sutton, the current Plymouth, surpassed it. In 1620, the Pilgrim Fathers left Plymouth for the New World and established Plymouth Colony – the second English settlement in what is now the United States of America. During the English Civil War the town was held by the Parliamentarians and was besieged between 1642 and 1646.