The Market square is located centrally in the preserved medieval urban layout of Uniejów. Particularly prominent is the 25-metre-high neo-Baroque bell tower. A real architectural gem is the 14th-century collegiate church. The elements that are of the greatest historic importance include the 14th-century cross-ribbed vaulting that has survived in the chancel, and the bronze sarcophagus, dating back to 1666, of Blessed Bogumił – the archbishop who crowned Bolesław the Bold. The archbishop’s relics are still kept in the collegiate church.
The unflagging importance of the market square for the town’s life can be proved by the fact that this is where the annual Great Knights’ Tournament begins.