Just got back from a week staying in Rosslyn Castle coutesy of the Landmark Trust. Felt superior, sweeping past the gawking tourists who wander up to the castle ruins after viewing the chapel and producing the key and going into the habitable bit!!! Glad for the restoration fund that there are lots of paying tourist but glad I saw round the chapel peacefully a couple of years ago after seeing it mentioned in Dorothy Dunnet's "Niccolo" series.
Opposite the castle is a farm with a sign : "Da Vinci Manure, 50p a bag" ! Sheila & others of our party went to the Sunday service at the chapel, the vicar preached against all the superstitious nonsense of "that book". He didn't call it Da Vinci Manure though!

RtS