The aim of this thesis is a new approach to the alleged forum of Gightis (Bou Ghrara) in today's Tunisia. In order to achieve this, older research will be throroughly analyzed, especially that of L.-A. Constans. An autopsy of the ruins was also required for physical evidence. Furthermore, a comparison with other forums and types of buildings has been made; amongst them several in the province of Africa proconsularis. The main research question is whether the forum in Gightis had been built according to Roman standards, and what was the purpose of the individual buildings. This has been answered with the help of the above mentioned aspects. The central square is clearly Roman, however it differs from the traditional Roman forum such as the one in Pompeji, because it lacks typical criteria. This fact results from the increasing detachment of the formerly strict Roman rules of structure and construction of a forum. Another problem with the identification of forums in the second and third century is the massive similarity with the increasingly complex temple district. Moreover, during the imperial era in the provinces of North Africa, there were several enclosed monumental squares. For what is known today they were built for various purposes. Even though many areas in Gightis have remained unexcavated, it can be stated that the researched object is definitely a forum. This area is a center of the public life; attached to the road network, with political and administrative motivation. Also its religious function cannot be denied, as the cults of Isis and Serapis had been placed in addition to the imperial cult in the main temple.