One of the very few Nash built castles still left standing - situated within approximately 60 acres of informal woodland gardens created by J C Williams, who sponsored plant hunting expeditions to China at the turn of the century. As well as guided tours of the house from March to May visitors will see some of the magnificent selection of plants brought back by the intrepid plant hunters of the early 1900s these include not only the collection of magnolias but a wide range of rhododendrons and the camellias which Caerhays and the Williams familly are associated with worldwide.