Southern Bugey: the area, its four sectors and how to get there

Information checked on 9 November 2026 Updated 9 November 2026

Rolling Bugey landscape seen from the Cerveyrieu waterfall: forests, meadows and ranges of hills under a clear sky
Photo : Rémih — Wikimedia Commons, CC BY-SA 4.0

Key points

Southern Bugey (Bugey Sud) is the southern part of the Bugey, a natural region of the Ain département between the Rhône and the river Ain. Bugey360 covers the Bugey Sud community of communes (41 municipalities, based in Belley) and the Valromey, in four sectors. You arrive by train at Culoz or Virieu-le-Grand–Belley stations, then continue by regional coach.

The Bugey is a natural and historical region of the Ain, a département (the French administrative level roughly comparable to a county) in eastern France. It forms the southern tip of the Jura mountains, bounded by the Rhône to the east and south and by the river Ain to the west. Bugey360 follows its southern part: the Bugey Sud community of communes around Belley, and the Valromey. This page sets out the basics of the area and points to each section of the site.

Bugey, Bas-Bugey, Haut-Bugey and Valromey

Geographers distinguish two broad areas. The Haut-Bugey (Upper Bugey) covers the north. The Bas-Bugey (Lower Bugey), in the south, roughly matches the arrondissement of Belley, a State administrative district. Between the two, the valley of the Séran forms the Valromey, a small country (pays) that had its own identity.

History explains these divisions. The Bugey passed to the House of Savoy in 1077. It became French under the Treaty of Lyon of 17 January 1601, together with the Valromey and the Pays de Gex, in exchange for the marquisate of Saluzzo, which was ceded to the Duke of Savoy. Belley, the historic and religious capital of the Bugey, then became the seat of a bailiwick attached to the province of Burgundy. Today the town is a sub-prefecture of the Ain, meaning it hosts a local branch of the State administration.

These definitions come from encyclopaedic sources (Wikipédia, the Historical Dictionary of Switzerland) and from tourism sources: we have not found any official administrative boundary for “the Bugey”.

What Bugey360 covers

The site focuses on ten municipalities (communes), each with its own page in the guide to the towns and villages: Belley, Culoz-Béon, Artemare, Champagne-en-Valromey, Valromey-sur-Séran, Haut Valromey, Arvière-en-Valromey, Virieu-le-Grand, Lavours and Brégnier-Cordon. Other municipalities in the grouping appear when a listing or an event concerns them: Vongnes, Contrevoz, Virignin, Cressin-Rochefort, Ceyzérieu, Pollieu, Magnieu and others.

What the site does not cover yet: the rest of the Bugey, to the north and west, and the neighbouring areas of Savoie and Isère. We will only widen the scope after an editorial decision, once we can apply the same verification method there.

The four sectors

Sector Municipalities covered Landmarks
Belley and the Rhône Belley, Virieu-le-Grand, Brégnier-Cordon Sub-prefecture, cathedral, Glandieu waterfall, ViaRhôna cycle route
Valromey Artemare, Champagne-en-Valromey, Valromey-sur-Séran, Arvière-en-Valromey Séran valley, Cerveyrieu waterfall, Fruitière du Valromey cheese dairy
Grand Colombier and the marshes Culoz-Béon, Lavours Grand Colombier climb, Lavours marsh, Culoz station
Retord plateau Haut Valromey Plans d’Hotonnes, cross-country skiing, mountain pastures

The Valromey has a page of its own: what to see and do in the Valromey.

The Bugey Sud community of communes

A community of communes (communauté de communes) is a grouping of neighbouring municipalities that pool services. Created in 2014, the Bugey Sud grouping has 41 municipalities according to its official website. Older documents give 43, 47 or 50: the difference comes from successive mergers, which created “new municipalities” (communes nouvelles) such as Culoz-Béon, Valromey-sur-Séran, Arvière-en-Valromey and Haut Valromey. The combined municipal population is 34,086 (INSEE, 2023 figures); the grouping itself announces “more than 35,000 inhabitants”.

Its responsibilities include planning, economic development, waste collection, tourism, transport, water and sewerage, and it runs facilities such as the Belley swimming centre. Its offices are moving in November 2026: see our page on public services in Southern Bugey (in French), at /vivre-dans-le-bugey/services-publics/.

Since 2024 the area has been a candidate for the Pays d’art et d’histoire label, a national heritage designation. The process is ongoing; the label has not been awarded.

The Bugey Sud Grand Colombier tourist office

The intercommunal tourist office is called Bugey Sud Grand Colombier. Its main office, open all year, is at 34 Grande Rue in Belley. It also has a seasonal office at the Plans d’Hotonnes, the Maison des Plans, and an occasional desk at the Maison du vélo (cycling centre) in Culoz. Opening hours change with the season and sources disagree: check the tourist office’s contact page before you go.

Bugey360 is an independent media outlet: we are neither the tourist office nor a local authority.

Getting there and getting around

By train

Two stations serve the area, according to the community of communes:

  • Culoz station, the only one with a staffed ticket office, linked by TER (regional trains) to Lyon, Chambéry, Geneva, Annecy, Grenoble and Valence;
  • Virieu-le-Grand–Belley station, with ticket machines only, on the lines towards Lyon (via Ambérieu) and Geneva (via Bellegarde).

Belley has no railway station. Connections and linking coaches are covered in our guide to getting around Southern Bugey.

By coach

Five regional coach lines leave from Belley: A73 to Chambéry, A43 to Culoz, A45 to Virieu-le-Grand and Champagne-en-Valromey, A47 to Hauteville, A93 to Morestel. Some run as on-demand services, which must be booked in advance.

The main sections of the site

The Bugey power station is not in Southern Bugey

A search for “Bugey power station” leads to EDF’s Bugey nuclear power station, located at Saint-Vulbas, on the Ain plain, beside the Rhône. Despite its name, it lies outside the area covered by Bugey360: Saint-Vulbas belongs to the Plaine de l’Ain community of communes, not to the CC Bugey Sud. According to EDF, four 900 MWe reactors are in operation there, commissioned in 1978 and 1979; the first reactor, Bugey 1, has been shut down since 1994 and is being dismantled. For any information about the site, the source to consult is EDF.

In this section

The Valromey valley seen from the Grand Colombier: mountain pastures in the foreground, a patchwork of fields and forests up to the Jura ridges

Valromey

The Valromey, valley of the Séran: villages and merged municipalities, Grand Colombier, Retord, the Fruitière du Valromey, markets, restaurants and seasons.

Related places

Practical services · Culoz-Béon

Gare de Culoz

SNCF railway station (TER)

Frequently asked questions

Is the Bugey nuclear power station in Southern Bugey?

No. EDF's Bugey power station is at Saint-Vulbas, on the Ain plain. Saint-Vulbas belongs to the Plaine de l'Ain community of communes, not to the CC Bugey Sud.

How many municipalities are in the Bugey Sud community of communes?

41, according to the grouping's official website. Older documents give higher figures, dating from before several municipalities merged.

Is the Valromey part of the Bugey?

Yes. The Valromey, the valley of the Séran, lies between the Haut-Bugey and the Bas-Bugey; it became French together with the Bugey under the Treaty of Lyon of 1601.