Dunnottar Castle stands on a headland on the coast at Stonehaven: a rock castle and a promontory fort, founded in 1400 and protected today as a scheduled monument. It is a defended site rather than a furnished country house, and that is a useful frame to give children before you arrive.
The month matters more than the hour. The castle keeps a much shorter daily window in winter than in high summer, and the times step up and down more than once across the year rather than changing on a single date, so the same trip in November and in July is not the same length of visit.
