The Ara trium Galliarum ("Altar of the Three Gauls") was a Roman sanctuary at Lugdunum (modern Lyon, France), founded in 12 BC by Drusus at the confluence of the Rhone and Saone rivers. 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. The altar bore the names of 60 Gallic tribes and featured prominently on coins from the Lugdunum mint.
Ara trium Galliarum

| Type | Temple complex |
|---|---|
| Period | 500 BC - 1 AD |
| Country | France |
| Coordinates | 45.7668° N, 4.8334° E |
France