Trim Castle, located in the heritage town of Trim, is a massive Anglo-Norman fortification and the largest of its kind in Ireland. It took 30 years to build this impressive structure, which includes a monumental three-storey keep that was once considered impregnable. Visitors can explore the castle grounds and marvel at the sheer size and thickness of the walls. The castle has a rich history, with notable visitors like King John and Richard II. Don't miss the chance to visit this iconic symbol of Norman glory in Ireland!