Agaunum, known today as Avenches, is an ancient Roman settlement located in present-day Switzerland. It was established around the 1st century AD and served as a significant military and administrative center in the Roman Empire. The site features well-preserved ruins, including remnants of Roman walls, temples, and an amphitheater, showcasing its historical importance. The name Agaunum is often associated with the early Christian martyr Saint Maurice, who is believed to have been killed there. The town became a pilgrimage site in the Middle Ages, attracting visitors to honor the saint. Today, Agaunum is recognized for its archaeological significance and cultural heritage.