Steel support beam inside ancient tower. Rhuddlan Castle, North Wales, UK.

Modern support beam deep inside the ancient structure of Rhuddlan Castle, North Wales, UK. 

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steel safety barrier in old tower of Rhuddlan Castle, North Wales, UK.

Steel safety barrier in old tower.

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Inside tower. Rhuddlan Castle, North Wales, UK.

Within one of the towers Rhuddlan Castle, North Wales, UK. Note it is not round but has a geometric shape.

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Spiral Staircase. Rhuddlan Castle. North Wales. UK.

Very modern steel spiral staircase in Rhuddlan Castle. North Wales UK. 

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