The Ara trium Galliarum ("Altar of the Three Gauls") was a Roman sanctuary at Lugdunum (modern Lyon, France), founded by Drusus at the confluence of the Rhone and Saone rivers [1] [2] [3]. Consecrated to Roma and Augustus, it served as the central meeting place where representatives of the three Gallic provinces -- Aquitania, Belgica, and Lugdunensis -- gathered annually [1] [2]. The altar bore the names of 60 Gallic tribes and featured prominently on coins from the Lugdunum mint [2] [3].
Ara trium Galliarum

Also known as: Altar of the Three Gauls, autel des Gaules, autel des Trois Gaules, utel du sanctuaire des Trois Gaules, アラ・トリウム・ガッリアルム
| Type | Temple complex |
|---|---|
| Period | 500 BC - 1 AD |
| Country | France |
| Coordinates | 45.7668° N, 4.8334° E |
France