With the consecration of the St. Dimitar Church, the citizens of Radomir chose the church patron saint for their city’s patron as well. The Bulgarian Orthodox Church celebrates on October 26, the Day of St. Demetrius of Thessalonica. The popular beliefs hold the Day of St. Demetrius to be a celebration related to a turn in the seasons and a bottom line of the work done in the summer half-year, which is the season of the most strenuous agricultural activities. Folk tradition represents the saint as St. George’s twin brother, while in iconography he is painted mostly riding a red horse. The Day of St. Demetrius is an immutable holiday of the municipality of Radomir with celebrations and cultural events held in the city on a yearly basis.
The church was built in the period of 1855-1865 and was consecrated in 1866. A total of 220 icons come from this church, 33 of them were painted by the Bulgarian artist and icon painter of the revival period Nikola Dospevski and 46 were bought and donated to the church by Milen Lazarov with the collaboration of Naiden Gerov.