Lugdunum, known today as Lyon, was an important city in ancient Gaul. Founded in 43 BC, it became a major center for trade and culture due to its strategic location at the confluence of the Rhône and Saône rivers. Lugdunum served as the capital of the Roman province of Gallia Lugdunensis and was known for its impressive architecture, including theaters and temples. The city was also a significant hub for early Christianity in the region. It hosted the famous martyrdom of Saint Irenaeus, an influential early church father. Today, Lugdunum's rich history is preserved in its archaeological sites and museums, attracting visitors from around the world.