Rossend Castle, Burntisland, Fife, Scotland, built in Mary Queen of Scots and the armies of Oliver Cromwell were here. The castle was nearly demolished but was saved and restored by an architects firm in 1975 who still own it and use it as offices today.
Scotney Old Castle - Kent, England Scotney Castle is an English country house with formal gardens south-east of Lamberhurst in the valley of the River Bewl in Kent, England. It belongs to the National Trust.
Gatehouse to Ardverickie Estate next to Loch Laggen ~ Scotland, Series "Monarch of the Glen" was filmed here. * would LOVE to incorporate a tower. Small, albeit, but a couple levels perhaps with telescope tower on top.