Castra is a Latin term used during the Roman Republic and Roman Empire for a military 'camp', and castrum for a 'fort'.
A lidar view of Cawthorne Camp and forts in North Yorkshire.
Reconstruction of the specula or vigilarium (Germanic burgus), "watchtower", a type of castrum, at Rainau-Buch, Germany. An ancient watchtower would have been surrounded by wall and ditch.
A lidar view of Richborough Castle Roman fort and amphitheatre at the site of Rutupiae and part of Richborough port (HER 1916–1945) in Kent.
Reconstructed east gate of a castrum stativum, a more permanent base, at Welzheim, Germany
Deva Victrix, or simply Deva, was a legionary fortress and town in the Roman province of Britannia on the site of the modern city of Chester. The fortress was built by the Legio II Adiutrix in the 70s
A model of Deva Victrix (c. 3rd century CE) at the Grosvenor Museum, Chester
A moulded antefix roof tile showing the badge and standard of Legion XX, from Holt, in north Wales
An original section of the Roman fortress wall is visible from the Northgate.
Foundations of the Roman south-east corner tower, one of the 22 towers built by the Legio XX Valeria Victrix