Dumbarton is located at the entrance to Lomond Lake and the Highlands, 23 km west of Glasgow. The town is the ancient capital of Britain in Strathclyde, preserved to this day by the years. Dumbarton Rocks are a spectacle, and the Dunbarton Castle above them has become a modern barracks that opens most of the year. The Maritime Museum of Scotland has a still-operated ship-testing pool and small tea room. Walk 16 kilometers downstream of the city and you will see the Erskin Bridge across the north and south sides.