Ratiaria

Ratiaria was an ancient Roman city along the river Danube [1]. A Roman colony was established there, called Colonia Ulpia Traiana Ratiaria [1]. It is located 2 km west of the present village of Archar in Vidin Province [1]. Ratiaria was conquered by the Dacians of Burebista and later by the Romans [1]. There was a gold mine in the city, which was exploited by the Thracians [1]. In 304 or 305, during the Great Persecution three Christian men named Jan, Aggaeus, and Gaius were executed in the city [1].