Châteaux de Ternier

The Châteaux de Ternier were two fortified structures that once stood on a hill in the village of Ternier - today part of the commune of Saint-Julien-en-Genevois in the Haute-Savoie department, Auvergne-Rhône-Alpes region, right on the border with Switzerland.

Where exactly did the castles stand?

The Ternier hill sits just south of Geneva, close to the present-day centre of Saint-Julien-en-Genevois. The site is located at roughly 46.1396°N, 6.0886°E, on a modest rise typical of the foothills below Mont Salève, the striking limestone ridge visible across the border. The name "Ternier" survives today as the designation of this part of the commune and of the wider historical area around it.

What remains of the fortifications today?

Both structures are described as "former," meaning nothing survives on site in the shape of standing walls or towers that visitors could tour as a classic ruin. The hill they once occupied has since blended into the modern townscape, functioning more as a local landmark than as a formal heritage attraction. For anyone interested in the region's history, though, it remains a notable trace of the old border defences that once separated the lands of Savoy from those of Geneva.

How do you get there?

Saint-Julien-en-Genevois lies roughly 10-15 kilometres south of Geneva, right at the road crossing into Switzerland. The town is easy to reach: the RN201 national road connects it directly, and the Léman Express regional rail line runs straight into central Geneva. Travellers without a car have a convenient option here - the train reaches Saint-Julien-en-Genevois station in around fifteen minutes, and the Ternier hill is then within easy walking distance.

What else is worth seeing nearby?

The commune itself has a compact centre with local restaurants and a market typical of small towns in Haute-Savoie. Close by rises Mont Salève, a popular destination for day hikes and a viewpoint over Geneva, Lake Geneva and, on clear days, the Mont Blanc range. That combination - proximity to Geneva paired with an alpine backdrop - is what draws both day-trippers from the city and travellers looking for a quieter base in the region.

When is the best time to visit?

Spring and early autumn are the most rewarding seasons, with mild temperatures for walking around the area and the clearest views toward Salève and the surrounding hills. Summer brings more day-trip traffic from Geneva, while in winter the proximity to the Alps turns Saint-Julien-en-Genevois into something of a transit point for travellers heading to the ski slopes.

Frequently asked questions

Where exactly did the Ternier castles stand? On a hill in the village of Ternier, now part of the commune of Saint-Julien-en-Genevois in the Haute-Savoie department.

Can you visit the ruins today? No visible ruins remain - the site of the two former fortified structures has since merged into the surrounding townscape.

How do you get to Saint-Julien-en-Genevois from Geneva? The easiest way is the Léman Express train or the RN201 road, covering a distance of about 10-15 km.

What else is worth seeing in the area? Mont Salève, with its viewpoints over Geneva and Lake Geneva, and the town centre of Saint-Julien-en-Genevois itself.