Durostorum: Roman legionary base and town on the Lower Danube, Byzantine episcopal see (modern Silistra).
- 29 BCE Roman fortress and important river port in Moesia Inferior near the delta of the Danube
- Before 114 CE, Legio XI Claudia was transferred to Durostorum. Here, the unit was to stay for three or four centuries.
- Its recruits increasingly were young men from nearby Thrace, but there is little evidence
- Late third century: Christianity
- Fourth century: improved military base
- Twelve martyrs between 303 and 362, including Saint Aemilian (burned in 352)
- Visit by Constantine the Great
- 380 or 388 bishopric; Mercurian-Auxentius was a pupil of Wulfila
- 396: birthplace of Flavius Aetius
- Sixth century: further improvements. Walls 3.50-4.20 meters wide
- Seventh century: Bulgarian
The Danube near Silistra
Durostorum, Roman sarcophagus
Silistra, Slavonic palace