Crichton Castle stands amid rolling hills that are interrupted here and there by patches of woodland. Crichton was a Bothwell family castle; Mary, Queen of Scots, attended the wedding here of Bothwell's sister, Lady Janet Hepburn, to Mary's brother, Lord John Stewart. The curious arcaded range reveals diamond-faceted stonework; this particular geometric pattern is unique in Scotland and is thought to have been inspired by Renaissance styles on the Continent, particularly Italy. The oldest part of the work is the 14th-century keep (square tower). Do note that there are no toilets at the castle.