St John’s Tower in Citadel Place is all that remains of Ayr’s medieval parish church, dedicated to St John the Baptist. The church appears to have been founded in the late twelfth century, and it was enlarged during the following centuries. In 1315 King Robert the Bruce convened a parliament or assembly in the church to decide the succession to the Scottish throne. At some point, a large tower was added to the church’s western gable. The many alterations which it has undergone make it difficult to date, but it seems most likely to have been built during the fifteenth century. Internally the tower has five stages ‚Äì a ground-floor vault, three rooms and a bell chamber, all accessed by spiral staircases.