The city of Aigai is located in the area between the palace and theatre on one hand, and the Rhomaios Tomb on the other. (It is possible that this area was also the site of the prehistoric settlement). Situated at the northern and eastern foothills of the Pieria Mountains, the built-up area was surrounded by a wall with an acropolis.
The building complexes which have been excavated include the temple of Eukleia, the sanctuary of the Mother of the Gods, the 'heroon' (probably a shrine dedicated to the worship of the illustrious dead), votive pedestals, a portico structure, and a building of monumental dimensions possibly for public use. The finds date from the second half of the 4th century BC, and appear to have been in use until the end of the 1st century BC.