Farnham is a town in Surrey, England. Its railway station is on the Alton Line, which provides commuter links to London at Waterloo. The A31 Farnham bypass links the town by road to Winchester, Alton and Guildford, and the A325 links the town to the A3 (London-Portsmouth) at Greatham. The town is situated 42 miles (67 km) southwest of London in the extreme west of Surrey, adjacent to the border with Hampshire. Guildford is 11 miles (17 km) to the east, Aldershot lies 4 miles (7 km) to the north and Winchester is 28 miles (45 km) to the west. Its sister city is Andernach in Germany. It is of historic interest, with many old buildings, including a number of Georgian houses. Farnham Castle overlooks the town. Although the buildings on the castle grounds are now a conference centre, the medieval keep is in the care of English Heritage and is open to the public. The town is roughly 70 metres (230ft) above sea level in the town centre, although in the southern suburb of Shortheath the altitude rises to more than 100 metres (328 feet) and to the north of the town, at the prehistoric earthworks of Caesar's Camp, Upper Hale, over 180 metres (591ft). Crooksbury Hill to the east of the town is 162m (531ft). The town is situated on the North Downs. More on Farnham