- Romans built a turf and timber fort at Ribchester around AD 78 during the reign of the emperor Vespasian and the governorship in Britannia of Petillius Cerialis.
- After later governor Agricola successfully conquered the northwest, the fort became a permanent cavalry post under the control of the legionary base at Deva (Chester).
- The fort was rebuilt in stone around AD 125 and occupied for over three hundred years.
- The first garrison was the ala II Asturum from northwestern Spain.
- The Sarmatian Cavalry from modern Hungary was present at Bremetennacum during the third century.
- A parade helmet found in 1796 by a clogmaker’s son. The original bronze embossed helmet, along with the rest of the hoard of military cavalry equipment and military awards found by the boy, is in the British Museum but the there is a copy in Ribchester Museum.
- A curse tablet which says something about “eight thunderbolts” and “renewed for eight more”.
- A tombstone of an Asturian cavalryman taking down a Celtic Briton.
- The Apollo Stone, dedicated to the god Apollo Marponus, from AD 241.
- Stone foundations of granary buildings are behind the museum, below ground level and hidden by the church wall.
- Along the front edge are the gutters and inside are three or four of the pillars that held up the granary floor.
- A layer of charred spelt was found during the 1908 site excavations indicating that the granaries burned down.
- Located behind the White Bull Inn which has four columns holding up its portico said to be from the Roman fort.
- The bath house was either demolished or left to decay around AD 225.
- Apodyterium (change room).
- Drain and well.
- Laconium (sauna) and 3 stairs.