Dumbarton Castle

Conquer more than 500 steps to stand atop one of Scotland’s greatest strongholds. The iconic Rock of the Clyde has heritage as breathtaking as its views over the Clyde, Loch Lomond and Argyll.

This dramatic volcanic plug, which is Dumbarton Rock, in-filled the crater of a volcano that was active 350 million years ago. The rock is well exposed and inaccessible on all sides. Click here if you want to learn more about this fascinating geological feature.

Admire great examples of 18th century Georgian military architecture and stunning views from the Tower Crag.

Throughout Dumbarton Castle’s long history it has been a royal residence and a fortress, and has many fascinating connections from the Vikings to the Scottish Wars of Independence. Mary Queen of Scots sailed to France from here as a child in 1548.

Dumbarton Castle was the centre of the ancient Kingdom of Strathclyde, supposedly visited by Merlin. It was later sacked by Vikings. It became a cornerstone of medieval royal power and latterly served as a military base and prison. You can explore its many fortifications with our interactive family trail.

The property is not suitable for visitors using wheelchairs or with limited mobility. 

Save with an Explorer Pass

An Explorer Pass, valid for 14 consecutive days, is a great way to explore our iconic sites.

Our sites sometimes need to close at short notice due to adverse weather, essential maintenance work, and other reasons outwith our control. Check for short notice closures. We advise checking ahead if the forecast is poor or you are making a long journey. If you have an urgent enquiry related to a site closure and your booking over the weekend or a bank holiday please get in touch with ticketing@hes.scot