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Castell Dolwyddelan is a thirteenth-century Welsh castle situated in the Conwy valley, Gwynedd, North Wales. Built during the reign of Llywelyn ap Iorwerth (Llywelyn the Great), the castle served as a stronghold controlling the upper Conwy valley and represents an important example of native Welsh medieval military architecture. The castle comprises two round towers connected by a curtain wall, positioned on a rocky outcrop that afforded strategic defensive advantages. The site retains substantial medieval masonry and has been subject to archaeological investigation and conservation by Cadw, the Welsh heritage monuments authority.
Castell Dolwyddelan is a scheduled monument protected by Cadw under reference CN040. View the official record →
Castell Dolwyddelan is a thirteenth-century Welsh castle situated in the Conwy valley, Gwynedd, North Wales. It is designated a Scheduled Ancient Monument by Cadw under reference CN040.
Castell Dolwyddelan dates from the medieval period, and is classified as a castle. It is one of over 32,000 scheduled monuments protected across the UK.
Castell Dolwyddelan is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is CN040.
Several scheduled monuments lie within 10 km, including Rhiwbach Quarry, Tramway and Incline System (5.7 km), Diffwys Quarry (6.4 km), Oakeley Quarry Tips (6.5 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Castell Dolwyddelan's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Castell Dolwyddelan stands on Unnamed Extrusive Rocks, Ordovician, bedrock that formed in the Ordovician. The rock here is felsic tuff.