For the first time, the stone paving in the Forum of Pompeii has been documented by photogrammetry with the addition of measurements taken by hand. Despite the robbing that took place after the eruption of 79A.D., traces of many unknown monuments, fountains, and bases of equestrian statues, reused after the earthquake of 62A.D., came to light. There is also evidence of earthquake damage. These observations have provided new and preciser dating for the triumphal arches. Cleaning of the south portico has provided new dates for the history of architectural development in this area at the end of the 2nd century B.C.