Guernsey (/ˈɡɜːrnzi/ GURN-zee; Guernésiais: Guernési) is the second-largest island in the Channel Islands, located 27 miles (43 km) west of the Cotentin Peninsula, Normandy. It is the largest island in the Bailiwick of Guernsey, which includes five other inhabited islands – Alderney, Herm, Jethou, Lihou and Sark – and many small islets and rocks. The bailiwick has a population of 63,950, the vast majority of whom live on Guernsey, and the island has a land area of 24 square miles (62 km).
Guernsey was part of the Duchy of Normandy until 1204, when the Channel Islands remained loyal to the English crown, splitting from mainland Normandy. In 1290, the Channel Islands were divided administratively and Guernsey became part of the Bailiwick of Guernsey. During the Second World War, Guernsey was invaded and occupied by Nazi Germany. After five years of occupation, the island was liberated on 9 May 1945, that date being celebrated annually as Liberation Day.