The history of Nyon is rooted in deep antiquity, making it one of the most significant historical centers in the Lake Geneva region. A walk through this city is a true journey through time, leading back to the origins of Roman civilization in what is now Switzerland. The city was founded by the Romans between 45 and 44 BC, during the time of Julius Caesar. It was originally named Colonia Iulia Equestris and was established as a settlement for veterans of the Roman cavalry; its center, known as Noviodunum, became the nucleus of urban life.
The transformation of a military settlement into a thriving city was driven by several factors, the most important being its strategic geography. Its location on the shores of Lake Geneva provided control over waterways and convenient links between Italy and Gaul. Nyon quickly became an administrative center governing vast territories, attracting officials, artisans, and merchants, which fostered rapid development.
Ancient Nyon was an impressive example of Roman urban planning and high culture. A monumental forum with a basilica was erected in the city, becoming the heart of the region's social, legal, and business activity. Cultural leisure for the residents was provided by the amphitheater, the ruins of which were only discovered by archaeologists in 1996. The economy flourished thanks to active trade in wine, ceramics, and luxury goods that arrived through the bustling lakeside port.