The Laboratory of photogrammetry of the Czech Technical University in Prague (CTU), Faculty of Civil Engineering has been focused for a long time on cultural heritage project [1], [2], [3], [5], [9]. In Cheb, located on the west border of the Czech Republic, there is the beautiful church of St. Nicholas and St. Elizabeth. This church was heavily damaged in the last days of the 2nd world war. The roofs of both of the highest towers, with a historically interesting construction, were destroyed and later, in the fifties, temporally re-roofed. After political changes in the nineties and thanks to the will of the Czech and German people, a reconstruction was decided. Unfortunately, there were no original plans or construction schemas found. Only historical images were at their disposal. There was a notable problem on the plans with the original dimension of the roof constructions and height. This problem was solved by the Laboratory of photogrammetry of the CTU, thanks to a limited (13 useful images) collected set of historical photos and images. No camera parameters or other information about original extent of images were available. For this reason, it was not possible to use the classical photogrammetry technique, only the direct liner transformation (DLT) method was available for solving this problem. In the neighbourhood of the church, 150 object points were measured and 50 new images were photographed using a calibrated camera Canon D20. Measured points should be identifiable on both historical and modern images and using these DLT parameters of historical images were calculated. This special photogrammetrical project was solved thanks to a spatial resection adjustment using these 13 historical photos and about 30 new images. The final calculations of the photogrammetrical model were very challenging and resulted in a lot of partial outputs. Finally, it was solved thanks to many experiments. From the created photogrammetrical model, dimensions of both towers were calculated. Of course, the accuracy was not very high but it still reached approximately 10 cm. The mathematical results clearly showed that the right tower was higher by 90cm; this confirmed that the methodology results were in line with the only preserved drawing. Based on our processing of historical images, a new construction plan was made and resulted in a successful reconstruction of the roofing of both towers in 2010. The technical and mathematical problems and solutions applied to this project will be main part of our contribution [1], [2], [3]. [ABSTRACT FROM AUTHOR]