Wales is called the “castle capital of the world” for a reason. The Normans had a tough time of it here and built over 600 fortresses. As a county, Monmouthshire is spoiled for choice when it comes to attractive ruins and iconic wonders that have seen better days. Join Chronicle reporter Tim Butters as he takes a tour of Monmouthshire’s castles in the first of a two-part series. This week we visit Abergavenny, Raglan, Caldicot, Usk, and Clytha.