Really beautiful grounds! Dog friendly outside of the palace. The palace interior was beautiful, but only one floor to walk in. The Ai weiwei exhibition was random & out of place in its surroundings.
If you are traveling to Oxford or the Cotswolds you owe it to yourself to visit Blenheim Palace. The home of the Duke of Marlboro is one of the grandest homes in England not belonging to the Queen.
The lakes of Blenheim Palace were used for a brief scene in Harry Potter and the Order of the Phoenix (2007) in which Harry looks into Prof. Snape's memories and sees him being bullied by James Potter