St Dimitar Church, Vidin, Eastern Orthodox cathedral in Vidin, Bulgaria.

St Dimitar Church is a brick building with traditional Eastern Orthodox design features, including geometric patterns and detailed ornamentation on its exterior surfaces. The interior contains religious artworks and furnishings typical of Orthodox ecclesiastical spaces.

The first church here was built outside the Kaleto fortress after 1718, when Ottoman border law barred Bulgarians from living inside the walls and closed the gates from 6 pm to 7 am. On 6 December 1868 a Bulgarian bishop served in Bulgarian for the first time, and the church became the see of Metropolitan Antim I, elected first Bulgarian Exarch four years later. The worn wooden structure was replaced: the foundation stone of the new church was laid on 10 March 1885 to a plan by Gencho Kanev, revised by architect Bahnani, and the first liturgy was held on 26 October 1890. Consecration followed in 1926.

On 6 December 1868 the church hosted the first solemn service led by a Bulgarian bishop in Bulgarian. Its patronal feast is 26 October, the day in 1890 when the antimension was laid and the first liturgy celebrated. The church was named for Demetrius of Thessaloniki, and the iconostasis and furniture were carved by Debar masters of the Filipovi family.

Visitors can enter during opening hours and explore the interior, with modest clothing being appropriate for the space. The best times to visit are outside of active worship services, when there is more quiet for viewing.

The building functions as the administrative center for the Vidin Diocese, coordinating religious affairs across the entire region. Few visitors realize the church serves as both a place of worship and a headquarters for managing the local Orthodox community.