This page shows a timeline for the buildings in Cathays Park together with Aberdare Hall which is strictly outside the boundary of the park. More information can be obtained from the individual entries in the menu on the left.
| Date | Building |
|---|---|
| 1895 October 8th | Aberdare Hall officially opened |
| 1898 December | Cathays Park purchased by Cardiff Corporation |
| 1901 October 23rd | City Hall foundation stone laid |
| 1901 October 23rd | Law Courts foundation stone laid |
| 1903 November 13th | Registry foundation stone laid |
| 1904 | Law Courts completed |
| 1904 | City Hall completed |
| 1905 June 28th | University College foundation stone laid |
| 1906 October | Law Courts officially opened |
| 1906 October | City Hall officially opened |
| 1909 October 14th | University College building officially opened |
| 1912 June 26th | Museum foundation stone laid |
| 1912 June 26th | University Viriamu Jones Research Laboratories opened |
| 1912 | Glamorgan County Hall officially opened |
| 1914 April 6th | Technical College foundation stone laid |
| 1916 March 16th | Technical College opened |
| 1919 November | Technical College first extension opened |
| 1921 | Registry extended |
| 1927 April 21st | Museum officially opened |
| 1927 December 14th | Technical College second extension opened |
| 1930 May 21st | University north wing (Tatem Laboratories) opened |
| 1931 May 19th | Glamorgan County Hall extension foundation stone laid |
| 1931 | Museum extension opened |
| 1931 | Registry extended |
| 1932 September 22nd | Glamorgan County Hall extension officially opened |
| 1932 | Museum extension opened |
| 1936 February 11th | Technical College third extension opened |
| 1937 April 8th | Temple of Peace and Health foundation stone laid |
| 1938 March 1st | Welsh Board of Health officially opened |
| 1938 November 23rd | Temple of Peace and Health officially opened |
| 1952 March 24th | Glamorgan County Hall extension officially opened |
| 1952 | University north wing (Tatem Laboratories) expanded |
| 1958 | University Redwood Building foundation stone laid |
| 1961 June 2nd | University Redwood Building opened |
| 1962 June 6th | University north wing completed with the Shandon extension |
| 1962 | University Arts Building (now Law Department) completed |
| 1962 June 6th | University south wing opened |
| 1966 July 29th | Police station foundation stone laid |
| 1968 April 18th | University Tower building opened |
| 1968 August 22nd | Police station opened |
| 1979 | Welsh Office building completed |