DYSERTH. 3 1/2 miles from Rhyl, in the vale of Clwyd, the town boasts a parish church with an ancient Jesse window, supposed to have been taken from Basingwerk Abbey. The outstanding feature of the town is the ruined castle, built by Henry II in 1241, on the site of a Norman Keep which in turn was built on the ruins of an ancient British fortress. Henry's castle was attacked by Llewellyn-ap-Gryffyd, and razed to the ground.
The waterfall, Dyserth Falls, is extremely beautiful, and can be approached until you are almost underneath it!