[3] The complex was commissioned to replace Cardiff's fourth town hall on the western side of St Mary's Street, which was completed in 1853.

[3] The contractor, E. Turner and Sons, used the world's first all-electrically operated building site, including eight 5-ton cranes to lift the stone blocks.

[7] The first floor landing of City Hall is decorated with statues in Pentelicon marble of famous figures from Welsh history.

These were funded by a gift from David Alfred Thomas, 1st Viscount Rhondda; the individuals commemorated were decided by a competition in the Western Mail newspaper.

[8] The figures portrayed are as follows: In July 2020, Cardiff Council voted to remove the marble statue of Sir Thomas Picton, on account of his links to slavery.

The chamber was designed to host Cardiff's Council meetings (which have subsequently been relocated to County Hall in the Atlantic Wharf area).