The name of the square derives from the first parish church built within the town walls – st. Michael's parish church. According to a legend, it was Leszek The Black who founded it in the 13th century to express his gratitude for the victory over the Yotvingians. In 1569, a service was held in the temple for the sake of the Union of Lublin. In 1856, the tsarist authorities made a decision to dismantle the church due to the safety hazard posed by the poor technical condition of the building. Today we can see the outline of foundations and a bronze model of the church. The house in the south-eastern part of the square is the former Vicars‘ house.
