Felicity Dahl, widow of the late writer and chairman of the Roald Dahl Museum's board, was also pleased with the Buckinghamshire attraction's top commendation.
"I could not be more delighted," she said. "The Museum is a place that Roald - who professed to hate most museums - would have loved. It's full of fun for children and adults alike. It is inspiring and welcoming."
"I would like to congratulate and thank the enthusiastic and hard-working staff who ensure our visitors enjoy a wonderful and memorable experience here.'
Other heritage attractions honoured in the Awards were Yorkshire's Castle Howard (Silver, Best Tourism Experience), Rockingham Castle, Leicestershire, and Forde Abbey and Gardens, Dorset.
The Enjoy England Awards for Excellence, now in their 19th year, are widely known as the 'tourism Oscars' and recognise the crème de la crème of domestic tourism. They promote healthy industry competition and high standards, helping to ensure England’s place as a world-class destination.