The city of Cambridge is an old English university town and the administrative centre of the county of Cambridgeshire, United Kingdom. It lies approximately 50 miles (80 km) north-northeast of London and is surrounded by a number of smaller towns and villages. It is also at the heart of the high-technology centre known as Silicon Fen. Cambridge is best known for the University of Cambridge, which includes the renowned Cavendish Laboratory, King's College Chapel, and the Cambridge University Library. The Cambridge skyline is dominated by the last two, along with the chimney of Addenbrooke's Hospital in the far south of the city and St John's College Chapel tower in the north. as opposed to another Cambridge in Gloucestershire, England, which is pronounced According to the 2001 United Kingdom census, the City's population was 108,863 (including 22,153 students). However, the population of the urban area, which includes parts of South Cambridgeshire district is estimated to be 130,000.