The study refers to the visual epesentation of the coastal front of the historical center of Thessaloniki in northern Geece and its changes that have occurred through the years. Most of the old town was destroyed by fire in August 18, 1917. A few years later, the French architect and archeologist Ernest Hébrard proposed the reconstruction of the city centr, but his plans were never fully implemented. Since then, a series of interventions changed the form of the old town and consequently the coastal cityscape. The reserch was initially based on the photogrammetric processing of archive aerial images (1938) of Thessaloniki's city centre. Besides the vertical images, high oblique aerial images dated back to 1932, proved to be, a significant source of information. A rich archive of old photographic material, sketches, drawings and gravures of the coastal forehead of the city was also used. Ortho-images of the coastal front, derived from laser scanning (2010), and a 3D moel of the historical city center, derived from the stereo photogrammetric proces of aerial images (1990), contributed decisively at the multi temporal study of the city front. The main outcomes of the pesent documentation study are the 3D represenntation (at scale of 1:200, accuracy 5 cm) of temporal changes of a part of the coastal front of the historical center of Thessaloniki and the 2D representation (at scale of 1:100, accuracy 1-2 cm) of these changes with respect to variations on skyline, lacunas, interventions in old buildings, etc.