Set in 26 acres of woodland, Castell Henllys is a reconstructed, Iron Age hill fort. Attractions include 4 roundhouses, a granary, an animal pen, livestock similar to those found in the Iron Age, a visitors centre, a gift shop, picnic areas and pleasant walks. 1999 saw the opening of the new Chief's House: the largest on the site. Each year a training dig is held on site for archaeology students.