Glanum, located near St-Rémy-de-Provence in southern France, was a Greek and then Roman town which prospered due to its location on trading routes between Italy and the Rhodanus (Rhone River). The town benefitted from a large building project in the Hellenistic period and another spree during the reign of Augustus which furnished Glanum with temples, a theatre, basilica, monumental arch, and Roman baths, amongst other amenities. The town was abandoned in the 3rd century CE but today offers the modern visitor an impressive array of Greco-Roman ruins.
Glanum was first settled by the Celts, specifically the Salyans (Salluvii), from the 7th to 6th century BCE. Indeed, the town's name derives from Glan, a Celtic spring deity who continued to be worshipped at the site into the Roman period. The town grew following an influx of colonists from Massalia (Marseilles) in the 2nd century BCE. Flourishing as a trade centre and noted as a place of healing, Glanum began to mint its own silver coinage (with a bull and a Glanic mother goddess design) and benefitted from a Hellenistic building programme which included a peristyle building, ornamental spring, temple, bouleuterion (public assembly theatre), and several large private villas. The town spread to cover some 20 ha in this period and was protected by a circuit wall.
The Romans took an interest in the town from the 1st century BCE following the Second Salyan War (90 BCE) when the consul Caecilius quashed what would be the last Celtic revolt in the region. The town was razed, but during the reign of Augustus, Glanum once more benefitted from a programme of rebuilding. New monumental structures included an agora, forum, theatre, a curia (council building), basilica and various other public buildings, temples, Roman baths, a triumphal arch, and mausoleum. Outside the town, two aqueducts were built to regulate Glanum's water supply. In addition to new buildings, the town was granted certain Latin privileges, made a full Roman colony in the 1st century CE, and continued to prosper as a trading stop near the Via Domitia.
Glanum's glory days came to an end when it was destroyed by the Alemanni c. 260 CE. The site was then abandoned by the local people in favour of a new location at nearby St-Rémy-de-Provence. Glanum was first excavated in the early 20th century CE and work continues today with some of the temples undergoing restoration.