During the renovations in the 1990s, a large foundation wall of rubble stone was found next to the western façade of the basilica on the north side, which probably belonged to a western tower. 18th-century surveys and drawings still show evidence of a tower that once stood here but was later demolished. The third question was whether, if we assume that there were two towers on the west side of the church, rather than just one, there is any evidence of the existence of the second tower on the south side.
The presumed site of the tower is now partly occupied by a cellar, and it is here that we have begun our search for remains. Once the concrete floor and other modern layers were removed, we found that the sandstone forming the hill was visible everywhere under the foundations. In other words, if there was a pair of western towers, we cannot provide archaeological evidence for the southern member of this pair.