Ruthin is the county town of Denbighshire. The castle was started by Llywelyn ap Gruffydd's younger brother Dafydd, then completely rebuilt by Edward I as part of his iron ring of castles to keep the Welsh under. The town was at the heart of the Glyndwr uprising in 1400. Most of the old castle was demolished after the Civil War in the seventeenth century. There is now a fine hotel on the site.
The church of St Peter has magnificent timber roofs and a fine choir. Ruthin has a market, pubs, cafes and plenty of places to stay.