Ceredigion has 11 registered Parks and Gardens, 4 registered landscapes of Outstanding and Special Historic Interest: (Upland Ceredigion, Lower Teifi Valley, Drefach-Felindre and Towy Valley).
Cultural landscapes such as Parks and Gardens currently fall under a statutory responsibility, which lies with the National Assembly for Wales and is administered by Cadw, its historic environment service. The Royal Commission on the Ancient and Historical Monuments of Wales (RCAHMW) maintains the National Monuments Record for Wales and the Dyfed Archaeological Trusts maintain the regional Historic Environment Record and advise on heritage management and development control. The Welsh Historic Gardens Trust (WHGT) is the only amenity organisation based in Wales specifically concerned with the protection and conservation of historic parks and gardens in Wales.
Ancient castles, or structures, such as Ceredigion Museum, are sometimes instead classified as Listed Buildings and are placed on a statutory list maintained by Cadw in Wales. Information on listed buildings and historic sites and landscapes of Ceredigion are held by the Royal Commission on the Ancient and Historical Monuments of Wales.