Castle of St John, Stranraer 1977

Rising in the heart of Stranraer, the Castle of St John is a striking example of a 16th-century Scottish tower house. Built around 1510 by Ninian Adair of Kilhilt, the castle was originally a private residence, designed more for status and protection than comfort. Its formidable walls and distinctive corbelled turrets were typical of the fortified homes of the Scottish lairds of the period.

The castle played a central role in the town’s development, standing just a short walk from the harbour. Over the centuries, its function changed dramatically. During the turbulent 17th century, it was used as a military garrison, and by the 19th century, it had become a prison and later a military barracks.

Restored in the late 20th century, the Castle of St John is now open to the public and managed by Dumfries and Galloway Council. Its interiors feature displays that tell the story of the building’s many uses, as well as the history of Stranraer itself. Visitors can climb to the upper floors for panoramic views over the town and Loch Ryan.