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| Dumbarton Castle on Rock of the Clyde (Alt Clut) which controls access to River Clyde. Glasgow, Scotland. | Governor's House (1735) built for John, 8th Earl of Cassilis on top of parapet at Dumbarton Castle. Glasgow, Scotland. | Ground level fortification & Governor's House at Dumbarton Castle. Glasgow, Scotland. | Walls defending British Dumbarton Castle on Rock of the Clyde (Alt Clut). Glasgow, Scotland. |
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| Steps ascending to Guardhouse (rebuilt 16thC) at Dumbarton Castle. Glasgow, Scotland. | Coal grate in Guardhouse once used as prison at Dumbarton Castle. Glasgow, Scotland. | Steps from Guardhouse to Portcullis Arch (14thC) at Dumbarton Castle. Glasgow, Scotland. | Portcullis Arch (14thC) at Dumbarton Castle. Glasgow, Scotland. |
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| View from higher levels of Dumbarton Castle. Glasgow, Scotland. | French Prison (1790) used to hold Napoleonic wars prisoners at Dumbarton Castle. Glasgow, Scotland. | Facade of French Prison (1790) at Dumbarton Castle. Glasgow, Scotland. | Duke of York's Battery at Dumbarton Castle. Glasgow, Scotland. |
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| Battery walls & French Prison at Dumbarton Castle. Glasgow, Scotland. | French Prison & volcanic terrain at Dumbarton Castle. Glasgow, Scotland. | Dumbarton Castle overlooking Leven River which flows into Clyde. Glasgow, Scotland. | Gun position overlooking surrounding towns at Dumbarton Castle. Glasgow, Scotland. |
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| Powder Magazine (1748) contained no iron to prevent sparks at Dumbarton Castle. Glasgow, Scotland. | Powder Magazine (1748) interior held 150 barrels of gunpowder at Dumbarton Castle. Glasgow, Scotland. | Dumbarton Castle overlooking Leven River which flows into Clyde. Glasgow, Scotland. | Town of Dumbarton from Dumbarton Castle. Glasgow, Scotland. |
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| Ben Lomond & mountain range from Dumbarton Castle. Glasgow, Scotland. | River Clyde looking east from Dumbarton Castle. Glasgow, Scotland. | River Clyde looking west from Dumbarton Castle. Glasgow, Scotland. | River Clyde looking west from Dumbarton Castle. Glasgow, Scotland. |
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| Swan at Dumbarton Castle. Glasgow, Scotland. | Carved rock slabs at Dumbarton Castle. Glasgow, Scotland. | Grave-slab fragment (900s) with interlaced pattern at Dumbarton Castle. Glasgow, Scotland. | Base for cross carved (1200s) with scissors or shears at Dumbarton Castle. Glasgow, Scotland. |
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| Stone slab (1704) carved by prisoner held for Jacobite sympathies at Dumbarton Castle. Glasgow, Scotland. |
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