As of Monday 14 December all staffed and unstaffed monuments will be closed until further notice.
This is following the announcement of the closure of all outdoor attractions in Wales.
For further information on the Welsh Government’s written statement: Updated Covid-19 control plan for Wales, please visit: gov.wales/written-statement-updated-covid-control-plan-wales
Until we can welcome you back in person, why not explore our 3D world of Cadw sites ...
Medieval mound where a long-lost castle once stood
This massive earthen motte (or mound) marks the site of Rhuddlan’s first castle. Built in 1073 by Robert of Rhuddlan above the River Clwyd, the mound would have been topped with timber fortifications, though it is possible that a stone structure was erected at a later date. The castle moved between Welsh and English hands several times during the troubled 11th and 12th centuries, until it was replaced by Rhuddlan Castle – built just a short distance away by King Edward I in 1277.