This Clock Tower dominates the southwest wall of Cardiff Castle. It was designed by architect William Burges at the request of John Patrick Crichton-Stuart, the 3rd Marquess of Bute. He was one of the world’s wealthiest men during the 19th century because of his family extensive land ownership and their legacy for making Cardiff a powerful coal exporting port. Inside of this tower are several opulent bachelor’s rooms. At the top is a two-level Summer Smoking Room. Visiting this tower costs extra, but you will thoroughly enjoy the 30 minute experience.