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Dinas Powis Castle is a medieval castle situated in Wales, occupying a naturally defensive hilltop position. The castle stands upon Triassic bedrock comprising sandstone and conglomerate strata, formations laid down during the Triassic period millions of years before human settlement. This geological foundation provided a stable base for medieval construction and contributed to the site's natural strength as a fortified position.
The castle's location exemplifies medieval site selection, where lords chose elevated ground offering commanding views across surrounding terrain. The underlying sandstone and conglomerate deposits, whilst not as soft as some British Triassic rocks, would have presented challenges for quarrying materials, making the reuse of natural stone outcrops and careful extraction essential for building works.
Dinas Powis Castle is protected as an ancient monument under Cadw, the Welsh historic monuments authority, with the designation GM021. This protection recognises the site's archaeological and historical significance within Wales's medieval heritage. The monument preserves evidence of castle construction, occupation and use within its physical structure and the archaeological deposits accumulated across centuries of habitation and use.
Dinas Powis Castle is a scheduled monument protected by Cadw under reference GM021. View the official record →
Dinas Powis Castle is a medieval castle situated in Wales, occupying a naturally defensive hilltop position. It is designated a Scheduled Ancient Monument by Cadw under reference GM021.
Dinas Powis Castle dates from the medieval period, and is classified as a castle. It is one of over 32,000 scheduled monuments protected across the UK.
Dinas Powis Castle 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 GM021.
Several scheduled monuments lie within 10 km, including Cogan Deserted Medieval Village (2.2 km), Middleton Moated Site (3 km), St Mary's Well Bay Pillbox (4.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Dinas Powis Castle'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.
Dinas Powis Castle stands on Triassic Rocks (Undifferentiated), bedrock that formed in the Triassic. The rock here is sandstone and conglomerate, interbedded.