Cardiff Castle Clock Tower.

The third Marquess of Bute,  inherited the title and castle in 1848. He was then less than a year old, and as he grew up he came to despise the existing castle, believing that it represented a mediocre, half-hearted example of the Gothic style. Bute engaged the architect William Burges, to undertake the remodelling of the castle. The two shared a passion in medieval Gothic Revivalism and this, combined with Bute's huge financial resources, enabled Burges to rebuild the property on a grand scale. Burges brought with him almost of all of the team that had supported him on earlier projects, including John Starling Chapple, William Frame and Horatio Lonsdale. Burges's contribution, in particular his research into the history of the castle and his architectural imagination, was critical to the transformation. Work began on Bute's coming of age in 1868 with the construction of the 150-foot (46 m) high Clock Tower. The tower, built in Burges's signature Forest of Dean ashlar stone, formed a suite of bachelor's rooms, comprising a bedroom, a servant's room and the Summer and Winter smoking rooms.  Externally, the tower was a re-working of a design Burges had previously used in an unsuccessful competition entry for the Royal Courts of Justice in London. Internally, the rooms were sumptuously decorated with gildings, carvings and cartoons, many allegorical in style, depicting the seasons, myths and fables. The Summer Smoking Room rested at the top of the structure and was two storeys high with an internal balcony that, through an unbroken band of windows, gave views of the Cardiff Docks, the Bristol Channel, and the Glamorgan countryside. The floor had a map of the world in mosaic.