'A fantastic creation, with the magic of a strange, dreamed, longed-for world': Inside Schloss Charlottenhof, the Prussian royal family's exquisite sanctuary

The desire for a retreat from the cares of the Prussian court and the formality of palace protocol created Schloss Charlottenhof, Brandenburg, a neo-Classical masterpiece. Aoife Caitríona Lau explains more; photographs by Paul Highnam for Country Life.