Dinefwr is home to more than 100 fallow deer and a small herd of Dinefwr White Park Cattle. A number of scenic walks include access to Dinefwr Castle, with fine views across the Towy Valley. There is also a wooded boardwalk, particularly suitable for families and wheelchair users. Newton House, built in 1660, but now with a Victorian façade and a fountain garden, is at the heart of the site. The tea-room here looks out over the deer park. Showrooms and exhibition rooms are open to visitors, including an exhibition in the basement on the history of Dinefwr.