Archaeologists have uncovered what is believed to be the largest Roman villa ever discovered in Wales, a rare and well-preserved structure that could significantly reshape understanding of Roman-era life in the region.
The structure was identified beneath Margam Country Park in Port Talbot using ground-penetrating radar. Measuring about 572 square meters (6,156 square feet), the villa stands out for its scale and condition.
The building’s remains were found less than a meter (3.3 feet) underground in an area that has never been plowed or developed, offering ideal preservation conditions.
Researchers from Swansea University, Neath Port Talbot Council and Margam Abbey Church described the find as a major step forward in Welsh historical studies. They believe the site could provide exceptional insight into daily life during the Roman occupation.
Structure details suggest high-status Roman residence
Dr. Alex Langlands, project lead and co-director of the Centre for Heritage Research and Training at Swansea University, said the building likely served as the residence of a high-status local figure.
He described the villa as a corridor-style structure with two wings and a front veranda, containing at least 14 rooms. Based on its design and possible features such as mosaic flooring and statues, the team believes it was an important center of activity within a large agricultural estate.
Archaeologists have uncovered the largest Roman villa ever found in the country beneath Margam Country Park. Experts say it could reshape what we know about Roman-era Wales.#RomanVilla #Wales #Archaeology #History #Margam #Discovery pic.twitter.com/fnivn4XjR4
— Tom Marvolo Riddle (@tom_riddle2025) January 12, 2026
The discovery came as part of a broader community heritage project, which included geophysical surveys conducted with the help of TerraDat, a Wales-based survey firm.
Christian Bird, representing the firm, said the imaging was exceptionally clear and helped map not only the villa but surrounding ditches and other features.
Largest Roman villa in Wales reveals expanded site layout
To the southeast of the main villa, the team also identified a 354-square-meter (3,810 square feet) aisled building, which may have functioned as a barn or meeting hall. The full layout indicates a complex site with layers of historical significance.
For now, the exact location remains undisclosed to protect it from illegal metal detecting. Langlands emphasized that conservation will take priority before any excavation begins. He noted that the villa’s level of preservation has drawn comparisons to Pompeii, due to the site being undisturbed for centuries.
The public will be able to learn more at an open day scheduled for January 17 at Margam Abbey Church.
Michael Wynne, the park manager, called the discovery an unusual and valuable find for western Wales. He said it helps fill a significant gap in local history and is likely to draw more visitors to the region.
Community members, including retired teacher Margaret Jones and heritage officer Harriet Eaton, expressed excitement over the discovery. Both highlighted the villa’s potential to restore pride in a town that has faced economic challenges.
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