Original historical documents relating to Cambridgeshire are held by Cambridgeshire Archives and Local Studies.
Large areas of the county are extremely low-lying and Holme Fen is notable for being the UK's lowest physical point at 2.75 m (9 ft) below sea level.
Cambridgeshire contains all its green belt around the city of Cambridge, extending to places such as Waterbeach, Lode, Duxford, Little & Great Abingdon and other communities a few miles away in nearby districts, to afford a protection from the conurbation. This is a chart of trend of regional gross value added of Cambridgeshire at current basic prices published (pp.
240–253) by Office for National Statistics with figures in millions of English Pounds Sterling. The RAF has several stations in the Huntingdon and St Ives area.
The town of Newmarket is surrounded on three sides by Cambridgeshire, being connected by a narrow strip of land to the rest of Suffolk.
The highest point is in the village of Great Chishill at 146 m (480 ft) above sea level.
Other prominent hills are Little Trees Hill and Wandlebury Hill (both at 74 m (243 ft)) in the Gog Magog Hills, Rivey Hill above Linton, Rowley's Hill and the Madingley Hills.
Snowfall is slightly more common than in western areas, due to the relative winter coolness and easterly winds bringing occasional snow from the North Sea.
In summer temperatures are average or slightly above, due to less cloud cover.
George Elwes Corrie, Master of Jesus College, observed in 1838, that while walking past a park named Parker's Piece he "saw some forty Gownsmen playing at football. As a result of its role in the formation of the first football rules, Parker's Piece remains hallowed turf for football fans and historians.