Blenheim is what happens when a nation decides to say thank you with stone. After John Churchill, 1st Duke of Marlborough, beat the French and Bavarians at the Battle of Blenheim in 1704, Queen Anne granted him the royal manor of Woodstock, and Parliament voted funds for a palace to go on it. Sir John Vanbrugh designed it, with Nicholas Hawksmoor at his side, and the result is so theatrical, so heavy with towers, trophies and courtyards, that it still divides opinion three centuries later. Funding rows, a famous falling out between Vanbrugh and the Duchess Sarah, and decades of building followed.
The park is arguably the finer work. Capability Brown reshaped it in the 1760s, damming the little River Glyme into a lake that drowns the lower storey of Vanbrugh's enormous Grand Bridge and turning formal avenues into rolling pasture with clumps of trees. On an autumn morning with mist on the water it looks effortless, which was exactly the illusion Brown was selling.
Blenheim's most famous resident arrived by accident: Winston Churchill was born here in 1874, during a visit by his parents. He is buried in the churchyard at Bladon, just outside the park's southern edge, under a plain stone that surprises people expecting something grander. Woodstock, at the gates, was a royal hunting ground long before the palace, and its streets of honey coloured stone, old coaching inns and antique shops make a pleasant place to park and wander.
As a starting point for a ride, Blenheim puts you on the doorstep of the Cotswolds. The A44 north-west towards Chipping Norton is fast and open, while the B-roads towards Charlbury and the Evenlode valley wind through stone villages, dry walls and beech woods. Watch for horses, cyclists in groups on weekends, and tractors dragging mud onto the bends after rain. The A34 and the Oxford ring road to the south are busy and best treated as a transit.
The palace and park charge for entry, and the house has its own cafés. Kidlington, five kilometres south-east, is the nearest sizeable place with straightforward fuel and supermarkets, and Oxford is close enough to pull you in if you have the afternoon free.