Blenheim Castle is a must if you go through Oxford. This palace, a UNESCO World Heritage since 1987, is a marvel from the architectural point of view, with its spectacular interior and its numerous gardens which are varied and very well maintained. Admission costs £ 17.50, but we had a voucher for 2 for 1 with our train ticket. The castle is open daily at 10 am and a little earlier in the summer. You can visit the gardens for a cheaper price then the palace. Admission includes two exhibitions, the secret history of Blenheim, a video show and one on Churchill, ve was born here. The palace was a gift from the King to the Duke of Marlborough for winning the Battle of Blenheim against the French.