Classical Pula was supplied with all major achievements of Roman civilization, it had its water supply and sewage systems, Forum, which was the administrative, commercial and religious center, capitolium with temples (in the Forum), two theaters, large city cemetery (mentioned by Dante in his “Divine Comedy”), houses richly ornamented with mosaics and marble.
The city was fortified by walls and was entered through some ten gates. The greater part was destroyed in the beginning of the 19th century, so that only some of the gates have been preserved until today. The Triumphal Arch of the Sergi is situated at the end of the street (Via Sergia) leading eastwards from the Forum. This triumphal arch leaned against the city gate (Porta Aurea) so that only its western, visible side was richly decorated. This monument was erected at the end of the 1st century BC by Salvia Postuma Sergi with her own money in honor of three members of her family who held important positions in Pula at that time. According to the inscription on the arch, the monument was constructed between 29 and 27 BC. For centuries this impressive Roman monument has attracted the attention of famous artists, especially Italian ones, such as the great Michelangelo. Heading north there are two other remaining city gates: the Gate of Hercules and the Twin Gates.