Perhaps the most well-known post-war government building is the Welsh Office (a.k.a.CP2), Cathays Park (built 1972-9) designed by Alex Gordon and Partners. It is a powerfully monumental addition to Cathays Park. Apart from the contextualism supplied by the use of stone and its consistent height with its neighboursit is otherwise anything but contextual being more ofa homage to the massing and outline of contemporary American architecture such as Boston City Hall (1972). Its defensive character was interpreted by some critics as being partly a response to the threats at that time from Welsh Nationalists.

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