The ruins of a thirteenth century castle on the banks of the River Lochy, and this castle was one of the main points where the Scots fought the enemy in the Battle of Inverlochy in the Middle Ages, specifically in 1431, and this battle led to the destruction of a large part of the castle . Today, it is one of the most important tourist attractions in Fort William, and visitors can read about the history of the castle from the guide signs scattered throughout.