Buchanan Castle Ruin of large Scottish Baronial mansion, designed by William Burn, 1852-8. Built for the Duke of Montrose to replace an earlier house which burnt down in 1850. It became a hotel in 1925, and was then used as a military hospital during the 2nd World War. Hitler`s deputy, Rudolf Hess, was treated here briefly after his plane crash-landed in Scotland in 1941.  To avoid paying rates (property tax) the roof was removed and the castle partially demolished in 1954.