Gioia del Colle, Cas…

After the unification of Italy and with the aim of mapping the country using modern scientific methods, topographers surveyed Apulia and made measurements and drawings of churches with their bell towers, coastal towers and rural fortifications in order to use them as trigonometric points. This campaign started in 1870 with most of the work accomplished in the first two years. It was completed in 1935. These sketches are filed in several albums by location and date and archived in the Istituto Geografico Militare in Florence.