patpalloon wrote:+1 for Claonaig - Arran - Ardrossan. ... Also you could visit Electric Brae - not been but sounds pretty cool.
Another +1 for Arran, but the Electric Brae isn't worth it IMO unless you're passing anyway. I was brought up in Ayr and even as a child I was always disappointed. Of course, given it's an optical illusion, some folks may be more susceptible than others, so it might seem quite impressive to them. Also it is weather-dependent - IIRC it's best in overcast conditions. (For those who don't know what it is, look up"Electric brae" in Wikipedia).
If you do use that route, Culzean Castle (both house and grounds) is worth visiting. And of course, Ayrshire and also Dumfries have numerous sites connected with Robert Burns, if you're into that sort of thing. The Galloway region has many quiet roads, attractive villages and pleasant scenery, although rather too much of it has been covered by spruce forest.