Cathays Lord Windsor) on 12 November 1766, he inherited great further lands including in Cathays to the north of his existing estate which he had partially had developed. He then bought other properties and farms, to the north and east, including what became Cathays Park. There he built Cathays House at a cost of £40,000 and at further cost landscaped Cathays Park. After his son took over the title he preferred to live in Cardiff Castle so demolished the house in 1815, and turned Cathays Park into purely enclosed parkland used for grazing. Following the 2nd Marquis' development of Cardiff Docks,
Crown Buildings, Cathays Park twenty years. In 1934–8, the block now known as Cathays Park 1 (a.k.a. CP1 or old Crown Building) was built by P. E. Hanton, as offices for the Welsh Board of Health. It is a three-storey building in the Stripped Classical style, with of floorspace. It also has an attic and a basement. Cathays Park 2 (a.k.a. CP2 or new Crown Building) is a five-storey office building with of floorspace, including an underground car park and a central atrium housing a cafe for the office staff. The "Encyclopaedia of Wales" describes CP2, completed in 1979, as conveying an impression of