St. Mawes is a village on the south coast of Cornwall, UK, near to Falmouth. It lies on the east bank of the 'Carrick Roads', a large waterway created after the Ice Age from an ancient valley which flooded as the melt waters caused the sea level to rise dramatically - creating an immense natural harbour, the third largest in the world.

St Mawes Castle is a well-preserved coastal fortress from the time of King Henry VIII, built to counter the invasion threat from Europe.