The church of “SS. Pietro e Paolo” in Marano di Valpolicella (VR), presents a cracks pattern of considerable size. For this reason a system of control by displacement transducers placed astride the main cracks observed was installed. For the knowledge of the structures flat jack tests, scans through covermeter, coring tests in foundation and investigations by videoscope that allowed to identify the characteristics of the steel dome, were also carried out.