Ratiaria
Ratiaria (or: Ratsaria, Raetiaria, Retiaria, Reciaria, Razaria; Bulgarian: Рациария; Greek: Ραζαρία μητρόπολις;) was an ancient Roman city along the river Danube. A Roman colony was established there, called Colonia Ulpia Traiana Ratiaria. It is located 2 km west of the present village of Archar in Vidin Province, northwestern Bulgaria and 3 km east of the present Balta Neagră Natural Reserve in s
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