It is - on the map it refers to the modern-day Vienne, near Lyon (Lugdunum): https://en.wikipedia.org/wiki/Vienne,_Is%C3%A8re

Back then present-day Vienna was called Vindobona, a small fort next to Carnuntum ;)

Many places in Gallia are off: Vienna is one; Augustodunum is certainly not at the same latitude as Lutetia; Genava is most certainly not south of Lugdunum; etc. Cool map otherwise !