Other sights in BuckinghamshireBuckinghamshire, England

Victorian mansion and huts at Bletchley where Second World War codebreakers cracked Enigma, now a museum of the work and its machines.

Bare chalk hilltop at the north-east end of the Ridgeway, an Iron Age hillfort with sweeping views over three counties.

Network of chalk tunnels dug into West Wycombe hill for Sir Francis Dashwood's Hellfire Club, running some 260 metres underground.

Purpose-built rowing lake by the Thames near Eton, the 2012 Olympic rowing venue, ringed by a public parkland loop.

Museum in Great Missenden's high street built around Dahl's archive and writing hut, in the village where he lived and is buried.

The oldest model village in the world, a 1920s miniature landscape of towns and railways in the gardens at Beaconsfield.

Moated 14th-century stone gatehouse, all that remains of a fortified manor at Boarstall, kept by the National Trust.

Working steam railway museum at Quainton Road station in the vale, with locomotives, carriages and demonstration lines.

Rescued historic buildings re-erected across parkland near Chalfont St Giles, from an Iron Age house to Victorian farm and chapel.

Hexagonal flint-walled roofless mausoleum crowning West Wycombe Hill beside St Lawrence's golden ball, built for the Dashwood family.

Microbrewery at Marlow Bottom with a beer shop and tours, brewing real ales since the early 1990s.

A striking cross on a triangular base, cut into Whiteleaf Hill above Princes Risborough — visible right across the Vale of Aylesbury.