BBC Cardiff Sector: Media, Leisure and Tourism Establishing an environment where creativity, collaboration and functionality are key. The new BBC Cymru Wales headquarters building, officially known as ‘3 Central Square’ is located in Central Square, Cardiff. The building was designed by Foster & Partners, with the interior design by Sheppard Robson and Overbury completing the fit-out. Spanning four floors and 150,000 square feet, it provides office, studio and production space for approximately 1,200 staff.