Trumpy, the da Vinci's are part of the Queen's private collection, not state owned. She wants stuff accessible so we can all enjoy, which is a risk, but well worth it don't you think, rather than locking stuff in a vault? Windsor Castle is now approaching 1000 years old! and is only 20 miles out of London BTW, and well worth the effort for a visit, set as it is overlooking a beautiful little town on the Thames, just a walk up the road from Eton College. I used to be able to see it out of my bedroom window when I lived in Cippenham.