Septimius Severus repaired another one of these types of structures that is named for Antoninus Pius.
According to legend, Servius Tullius built one of the first types of these structures for Rome using tufa rock. More notably, this type of structure was outfitted with ballistae by Maxentius in AD 307. That example of this type of structure was built by and named for Aurelian. Septimius Severus repaired another one of these types of structures that is named for Antoninus Pius. Typically, these structures have porta in them. Another example of these structures extends from Segedunum and goes to Solway Firth. For 10 points, name this type of defensive structure, one of which in Britain was named after the emperor Hadrian.
According to legend, Servius Tullius built one of the first types of these structures for Rome using tufa rock.
walls