The church in Beelitz was originally consecrated in 1247 and the cobblestones in the west transept bear witness to this. Bricked-up pointed arched at the base suggest that the church was elevated over time – rubble from several town fires is piled up around it. A special feature of the church can be found in the small octagonal structure beside the nave. In May 1235, a so-called blood miracle was supposed to have occurred here: The traces of blood are said to have appeared during an evening meal at the Corpus Christi procession. Because of this, an octagonal chapel was built near the church on the site of the miracle and transformed the remote town of Belitz into a pilgrimage site of national significance. In 1511, the church was vaulted and converted into a brick, flat-roofed, three-aisled pillar basilica. The Wunderblutkapelle chapel was also incorporated into the church building and is now accessible from inside the church.
Concerts are held here throughout the year and the church can be viewed after services or by prior arrangement between April and September; visitors can also climb up to the viewing platform. The key is kept at the parish office.