L'Imperi romà s'inicia amb l'arribada d'Augusto al poder i l'establiment del govern personal, acabant amb el poder senatorial que regia la República romana. Its inhabitants shared the awareness of being Romans and belonging to an eternal and universal order.

The'political and social stability *instarted with the Pax Augusta or Pax Romana, and the maximum territorial splendour, corresponds to the'Alt Imperi (27 BC - 235 AD). The image shows the frontiers and provinces at the time of the Emperor Trajan (98-117).

Hispania was organised into three imperial provinces: Lusitania, Baetica and Tarragona. Lucentum belonged administratively to the latter.

During the Roman Empire, the territory of the current province of Alicante was structured around four cities, the only ones to enjoy the legal urban recognition of Rome:

l'antiga colònia de César, Ilici, en La Alcudia d'Elx, on es conserven vestigis de la parcel-lació romana del territori (centuriatio)....

... the municipi d'època augustea, Lucentum (Alacant)...

... and two cities that would later obtain municipal status: Dianium (Denia), the Roman port of which is now at floodable levels...

... i Allon (la Vila Joiosa?), where the turriform funerary monument known as the Tower of Sant Josep still stands out.