© Mapbox · © OpenStreetMap contributors · Boundary data © Cadw
Caerleon Legionary Fortress: Grounds of Museum is a Roman legionary fortress located in Wales, occupying ground that rests upon Lower Devonian bedrock of mudstone, siltstone and sandstone. Established during the Roman occupation of Britain, this fortress would have housed a full Roman legion—approximately five thousand soldiers and support staff—making it one of only three legionary fortresses in the province. The underlying geology of relatively stable sedimentary rock provided adequate foundation for the substantial timber and later stone structures required by such an installation.
The fortress was laid out according to standard Roman military design, with a regular grid of streets, headquarters buildings, barracks, stores and defensive fortifications. Archaeological remains visible within the museum grounds include sections of the Roman street network and building foundations, which have survived largely because of favourable preservation conditions in the waterlogged lower strata. The site's location in South Wales made it strategically important for controlling the region and maintaining Roman authority.
Today the fortress grounds are protected by Cadw, the historic monuments service of Wales, under reference MM238. The museum situated on the site preserves and displays finds recovered from the fortress, providing visitors with material evidence of Roman military occupation and daily life. The visible archaeology, combined with subsurface remains, makes this one of the best-preserved legionary fortresses surviving from Roman Britain.
Caerleon Legionary Fortress: Grounds of Museum is a scheduled monument protected by Cadw under reference MM238. View the official record →
Caerleon Legionary Fortress: Grounds of Museum is a Roman legionary fortress located in Wales, occupying ground that rests upon Lower Devonian bedrock of mudstone, siltstone and sandstone. It is designated a Scheduled Ancient Monument by Cadw under reference MM238.
Caerleon Legionary Fortress: Grounds of Museum dates from the roman period, and is classified as a legionary fortress. It is one of over 32,000 scheduled monuments protected across the UK.
Caerleon Legionary Fortress: Grounds of Museum 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 MM238.
Several scheduled monuments lie within 10 km, including St Julian's Wood Camp (1.5 km), Newport Castle (3.5 km), St. Mary's Churchyard Cross, Llanwern (4.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Caerleon Legionary Fortress: Grounds of Museum'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.
Caerleon Legionary Fortress: Grounds of Museum stands on Lower Devonian Rocks (Undifferentiated), bedrock that formed in the Early Devonian. The rock here is mudstone, siltstone and sandstone.