PHILIP II OF MACEDON
In 342 BC, the troops of Philip II of Macedon established their domination over Thrace. The renaming of Eumolpia to Philippopolis was an act with which the conqueror Philip II of Macedon declared the annexing of the conquered lands to the Macedonian state.
Archaeological studies of the layer from the Hellenistic Age of Philippopolis show that the urbanisation processes characteristic of all conquered cities took place there as well. The Hippodamos city planning system began to be introduced gradually. A characteristic principle of the orthogonal plan was the crossing at a right angle of the main and secondary streets - cardo and decumanus, oriented to the four directions of the world, and the building of the areas formed -insulae. The culmination in the ambitious building programme came with the construction of a new fortification system. The newly-built solid fortification walls transformed Trimontium into a strong fortress. Sectors from the earliest fortification system can be seen preserved today on the territory of the initial city nucleus.
The inclusion of Eumolpia in the confines of the Macedonian state necessitated the next - second - reorganisation of the sanctuary on Nebet Tepe Hill. The temples and the round platforms from the western terrace of Nebet Tepe Hill were no longer used and were destroyed by the new fortification wall. The eastern terrace was added to the sacred territory. A pit sanctuary spread over the two terraces.
During that period, the necropolises were in immediate proximity to the city territory, to the north. The discovered burials contain incredibly rich funerary offerings. These necropolises are yet another proof of the wealth of the Thracian aristocracy from Philippopolis.