It stretches from the Thames Valley to the Midlands.
Much of the county is covered by the beautifully wooded Chiltern Hills, the Burnham Beeches and the fertile Vale of Aylesbury.
Aylesbury is the county town, with an attractive Market Pace, and is famed for its Aylesbury ducks.
Beaconsfield has attractive Georgian buildings and the oldest model village in the world.
Buckingham is a quiet little town after which the county is named, but since the 1970s has been home to the University of Buckingham.
Chalfont St. Giles was the home of John Milton.
Eton, across the river from Windsor, is most famous for Eton College, founded by Henry VI.
High Wycombe can claim among its industries the making of furniture, paper and postage stamps.
Jordans has a long association with the Society of Friends, better known as the Quakers, and the burial place of William Penn, founder of Pennsylvania.
Marlow, beside the Thames, has a fine suspension bridge and was where Mary Shelley wrote "Frankenstein".
Milton Keynes is an enormous New Town which would be better described as a New City, which unfortunately was designed for the convenience of motorists.
Olney was the home of John Newton, who wrote "Amazing Grace", and has a famous annual Pancake Race.
Slough is an industrial town where the Mars confectionery company have their factory, and was the subject of John Betjeman's famous poem about "friendly bombs".
Stoke Poges was where Thomas Grey wrote "Elegy in a Country Churchyard".
Buckinghamshire has film studios at Iver Heath and Denham, and has featured in films such as "Citty Chitty Bang Bang" and "Four Weddings and a Funeral".
The county's rivers include, in addition to the Thames, the Great Ouse, the Chess and the Colne.