[1] The building was designed by Sir Percy Thomas in the neoclassical style (but perhaps more accurately described as Stripped Classicism) and was officially opened by The Duke of Kent on 23 October 1934.

[3][4][5] The design envisaged a building finished in white Portland stone, and included a 48 metres (157 ft) art deco clock-tower, making it a landmark.

[6] The clock-tower featured the prow of a Viking longship, jutting out on each side as a reminder of Sweyn Forkbeard, thought to be the founder of Swansea.

[8] Percy Thomas won the Bronze Medal for Architecture from the Royal Institute of British Architects for his work in 1935.

[8] On 3 July 1969, The Prince of Wales made an announcement in person at the Guildhall that the town of Swansea would become a city.