[5] It grew to be one of the most important Roman colonies in modern-day Switzerland, with a forum, a basilica and an amphitheater that was discovered only recently, in 1996, when digging for the construction of a new building.

Noviodunum was part of a loose network of settlements that radiated out from Lugdunum (modern Lyon, France) and helped to control the Rhone Valley.

A monumental center, housing everything needed for the economic, religious and social life of the colony, was established.

A market building (macellum) with a central courtyard around which were the sales rooms, and the baths (tepidarium with geometric shapes and mosaics) were renovated.

Some villa suburbana stood in the west of the village, while the artisan and merchant quarter, presumably, developed in the southwest.

A ten-kilometre-long (six-mile) aqueduct, which ran from the Divonne area to the colony, provided the water supply.

[5] After a long period of peace and prosperity, signs of crisis and general insecurity were increasing in the early 3rd century.

Geneva became the center and seat of the diocese which initially fought to administer the territory that had been part of the Colonia.

In a 926 charter, Rudolph II of Burgundy mentioned that this area was under a comes de pago Equestrico.

In 1272, the Archbishop of Besançon confirmed Philip of Savoy's right to administer high justice in Nyon.

Around the same time, the square César Tower or Tour de Rive (now a residence), was built to defend the city.

[6] In 1293, Amadeus V, Count of Savoy, and his brother Louis I, Baron of Vaud, conquered the city by besieging it from both the land and the lake.

The last prior, before the Reformation in 1535 was Aymon de Gingins, who was also the abbot of Bonmont and the selected Bishop of Geneva.

Nyon remained an important transhipment point for trade along Lake Geneva and from France and Italy.

Grain and wood came from Burgundy and Franche-Comté through the Col de la Givrine and Saint-Cergue on to Geneva.

It was followed by the Jacob Dortu and Ferdinand Müller porcelain factory in 1781, both of which contributed Nyon's reputation for fine ceramics.

The councils of Nyon formed an oversight committee and refused to pay homage to Bern on 10 January 1798.

When this proclamation of support was brought from Nyon to Lausanne, on 24 January 1798, it finally led to the Vaudois revolution.

In the first half of the 19th century, the city continued with the demolition of the fortifications, but left wall remains at the Promenade des Marronniers and by the tower of Notre Dame.

The porcelain factory, Müller et Dortu temporarily closed in 1813, then resumed production of ceramics in the Art Nouveau style in 1878.

Other industries in Nyon include the pasta factory Sangal SA (1860–1996), Zyma (1906, since 1996, Swiss Novartis Consumer Health), Stellram (hard metal treatment, 1940–99), Cherix et Filanosa SA (printing and graphic arts, 1932) and several tool factories.

Starting in 1966, the companies stopped using the local locks and dams for hydropower and by 1974 they had disappeared from the Asse river.

The town is well known on the international stage as the home of the headquarters for UEFA, the governing body for football in Europe.

Along the main thoroughfare a residential section developed to the east of the old city, and an industrial sector to the west.

infoclimat.fr[14][15] The blazon of the municipal coat of arms is Per pale Gules and Azure, overall a Fish nainaint Argent.

[18] The historical population is given in the following chart:[4][22] Nyon Castle and the Museum of the History of Porcelain, the Roman Colonia Iulia Equestris, the Swiss Reformed Church of Notre-Dame, the Manoir at Rue Maupertuis 2 & 4, the Roman Museum and the Union of European Football Associations (UEFA) are listed as Swiss heritage site of national significance.

The number of jobs in the primary sector was 39, of which 35 were in agriculture, 2 were in forestry or lumber production and 2 were in fishing or fisheries.

In the Vaud cantonal school system, two years of non-obligatory pre-school are provided by the political districts.

Nyon is home to FC Stade Nyonnais, who play in the Swiss Challenge League, and their ground Colovray Sports Centre.

The UEFA organises their sanctioned national team and club competitions and regulates the national football associations across Europe, South Caucasus, Turkey, Cyprus, Israel and Kazakhstan and its competitions, and the ECA regulates UEFA-affiliated member clubs from every associations.