CP1 or old Crown Building) was built by P. E. Hanton, as offices for the Welsh Board of Health.
[1] It is a three-storey building in the Stripped Classical style, with 3,599 m2 (38,740 sq ft) of floorspace.
[3] The Encyclopaedia of Wales describes CP2, which was built from 1972 and completed in 1979, as conveying an impression of "bureaucracy under siege".
[7] The sky bridge between Cathays Park 1 and 2 'the link' has been the subject of some discussion amongst staff based in the building.
[8] In 1968, Cathays Park 1 was damaged by a bomb explosion, the second in the area in under 12 months following a previous attack on the nearby Temple of Peace.