Blenheim Palace's lost ballroom, theatre and chambers seen for the first time in 250 years
Recent work has meant that chambers unseen for 250 years have emerged from the murky underwater depths at Blenheim Palace, the birthplace of Sir Winston Churchill. Annunciata Elwes reports.


The lower rooms of Sir John Vanbrugh’s famous Grand Bridge at Blenheim Palace, Oxfordshire, have recently emerged, albeit temporarily, from murky underwater depths for the first time in 250 years. Capability Brown flooded them in the 1760s when he created the 40-acre lake, forming what Lord Randolph Churchill (father of Winston) dubbed ‘the finest view in England’.
Findings in the ‘habitable viaduct’, which contains a ballroom, theatre and various other rooms complete with fireplaces, include 18th-century graffiti, sunken boats used for reed cutting in the 1950s, original plasterwork, stairways and what is possibly a cooking range.
The work is part of a £12 million, 10-year restoration project of the landscape and lakes; some 400,000 tonnes of silt must be removed to protect the Grade I-listed, 120m-long Grand Bridge, which has a 30-metre-wide central arch flanked by smaller arches and four corner towers.
Blenheim, now a UNESCO World Heritage Site, was built as a gift for Gen John Churchill, 1st Duke of Marlborough, in honour of his victory over the French in the War of the Spanish Succession, particularly at the Battle of Blenheim (1704), from Queen Anne and the nation. As the ancestral home of the Dukes of Marlborough, it is the birthplace of Sir Winston Churchill and, in the 19th century, was saved from ruin by the 9th Duke’s famously unhappy marriage to American railroad heiress Consuelo Vanderbilt.
In the English Baroque style, it is often called Vanbrugh’s masterpiece, an architect whose ambitions plans and escalating costs caused Sarah, the 1st Duchess of Marlborough, so much annoyance that he was later banned from setting foot on the estate.
Originally, Vanbrugh’s Bridge contained 33 chambers; one large room was described sarcastically by the Duchess in 1716 as ‘for a ball if there were occasion’ and others included a bathing place and a boat house.
‘The dredging of Queen’s Pool and the repairs to the Grand Bridge are not only our greatest challenge to date but also mark some of the most ambitious stonework and dredging projects ever attempted in the UK,’ says Blenheim’s Head of Estates Roy Cox.
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‘If all goes according to schedule this initial investigation will enable us to draw up detailed plans for the main work, which is likely to begin towards the end of this year and into 2020.’
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Annunciata grew up in the wilds of Lancashire and now lives in Hampshire with a husband, two daughters and an awful pug called Parsley. She’s been floating round the Country Life office for more than a decade, her work winning the Property Magazine of the Year Award in 2022 (Property Press Awards). Before that, she had a two-year stint writing ‘all kinds of fiction’ for The Sunday Times Travel Magazine, worked in internal comms for Country Life’s publisher (which has had many names in recent years but was then called IPC Media), and spent another year researching for a historical biographer, whose then primary focus was Graham Greene and John Henry Newman and whose filing system was a collection of wardrobes and chests of drawers filled with torn scraps of paper. During this time, she regularly gave tours of 17th-century Milton Manor, Oxfordshire, which may or may not have been designed by Inigo Jones, and co-founded a literary, art and music festival, at which Johnny Flynn headlined. When not writing and editing for Country Life, Annunciata is also a director of TIN MAN ART, a contemporary art gallery founded in 2021 by her husband, James Elwes.
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