Baba Vida (Bulgarian: Баба Вида) is a medieval castle in Vidin in northwestern Bulgaria and the town's primary landmark. It consists of two concentric curtain walls and about nine towers of which three are preserved to their full medieval height, including the original battlements, and is the only entirely preserved medieval castle in the country. Baba Vida is above sea level. The construction of the castle began in the 10th century at the place of the Ancient Roman castell Bononia. The buildi…