Ferries are an excellent way of getting from A to B. Board one of the services that sets off from Cairnryan Port and see the area from the water.
You'll soon see why this Stranraer ferry passenger terminal is a hit with travelers. If you're looking for other things to keep you busy, Castle Kennedy Gardens, Castle of St John, and Stranraer Museum are in this area too. They won't take you long to get to from Cairnryan Port.