Although the vikings built the original fort, it was the Anglo Normans who built this structure

Believed to be the first mortar building in Ireland, the walls are 3m thick

Paris' most famous landmark - The Eiffel Tower

Reginald's Tower is the largest structure in the old defences

Reginald's Tower is the oldest civic urban building in Ireland

Reginald's Tower on the quayside, Waterford

Reginald's Tower on the quayside, Waterford

View from the Trocadero - The Eiffel Tower