The town is situated at 199 km north-west of Sofia, on the right bank of Dunabe it is linked with Kalafat town (in Romania) by a ferry. A major factor making the city a resort is the availability of mineral water.
Vidin is one of the oldest towns along the Bulgarian Danube bank. It appears as the Roman fortress of Bononia on the foundations of a Thracian settlement. During the First Bulgarian Kingdom it is known as Budin (Bdin). Bishop's centre. During the Second Bulgarian Kingdom it is a strong fortress and after 1371 a capital of the Vidin Kingdom under Tsar Ivan Sratsimir.
To this day the following sites have been preserved: Baba Vida fortress, built in the 9th-10th centuries on the ruins of a Roman fortress (rebuilt many times, its present appearance dating back to the 18th C.), the Turkish konak (the second half of the 18th C.), the mosque and library of Osman Nuri Pasha, the cruciform barracks of 1798, old Renaissance buildings, a synagogue
The town is a starting point for excursions along the Danube.