Newport Cathedral

Newport Cathedral, also known as St Gwynllyw's or St Woolos' Cathedral, is the cathedral of the Diocese of Monmouth within the Church in Wales, and the seat of the Bishop of Monmouth. Its official title is Newport Cathedral of St Woolos, King and Confessor. The name of the saint, Woolos, is an anglicisation of the Welsh name Gwynllyw.: 280 

It became a cathedral in 1949 and while it is the size of a large parish church rather than a typical cathedral, its history and development from the sixth to the twentieth century make it arguably one of the most interesting religious buildings in Wales.: 159

Source: Wikipedia