According to legend, Veveří Castle and its surroundings, including Matky Boží Chapel, were associated with the Knights Templar. These legends tell us that knights hid Templar treasure in passages under the chapel. Geophysical survey was conducted in and around the chapel in order to ascertain the existence of these passages . Survey was conducted using dipole electromagnetic profiling (DEMP) and ground penetrating radar (GPR). The survey discovered some cavities under and around the chapel suggestive of the presence of crypts, or burials at the front of the chapel. There is an inhomogeneity indicative of the presence of linear underground structures to the south of the chapel. Further investigation of this anomaly would be required to prove or disprove the existence of underground passages.