Best attractions and places to see around Cos include a variety of historical sites, scenic viewpoints, and greenways. The region is characterized by its medieval towns, such as Foix, situated at the crossroads of the Ariège and Arget rivers. Visitors can explore former railway lines converted into greenways, offering accessible routes for cycling and walking. The landscape features passes providing panoramic views of the Ariège plain and surrounding forests.
Last updated: October 5, 2026
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The Château de Foix impressively thrones on a rock above the town of the same name in the French Pyrenees. The medieval castle with its three distinctive towers was once the seat of the powerful Counts of Foix. Today, it houses a museum of regional history and offers a magnificent view of the old town and the surrounding mountain landscape.
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A steep path leads up to the multi-towered castle, which originally dates back to the 10th century.
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A very beautiful viaduct, it's a bit impressive and truly unusual on a greenway. The train used to go there, now the bikes go there!
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Hello everyone, I'm from Ariège, I decided this year to do the greenway with my dog Emy in both directions. It's a very beautiful walk, however there are some black points: lack of stone benches to deter potential thieves, and on the other hand the large Rimont tunnel which is 803 m long there is no more light. The motion detector does not work. Luckily that day I had my flashlight with me. There is horse excrement everywhere, perhaps one day we will have to ask the riders to pick up their droppings. It's a very beautiful walk.
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Overlooking the city, Foix Castle is a marvel. It perfectly illustrates what a medieval fortified castle is. Don't miss a visit to its arms and armor room. It is very impressive. A stroll along its rampart walk is also worthwhile.
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Huge monument, where the railway used to run and where cyclists and pedestrians now travel. Worth seeing!!!
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The region around Cos is rich in history. A prominent historical site is Foix, a medieval city dominated by its magnificent castle, located at the confluence of the Ariège and Arget rivers. The Vernajoul Viaduct Greenway, a former railway line, also represents a significant man-made monument with historical context.
Yes, several attractions are suitable for families. The greenways, such as the Vernajoul Viaduct Greenway, the Foix–Saint-Girons Greenway, and the V81 Greenway Tunnels, are excellent for family walks and cycling. The medieval city of Foix itself offers an engaging experience for all ages with its castle and charming streets.
For breathtaking views, head to Prat d'Albis, a mountain pass offering extensive vistas over the city of Foix and the Ariège plain. The Vernajoul Viaduct Greenway also provides scenic views, particularly towards the castle of Foix.
The region offers diverse outdoor activities, especially along its greenways. You can enjoy cycling and walking on routes like the Foix–Saint-Girons Greenway. For more structured outdoor adventures, you can explore various hiking and road cycling routes. Find detailed routes in the Hiking around Cos and Road Cycling Routes around Cos guides.
Yes, the greenways are ideal for easy walks due to their low slope and generally flat surfaces. The Foix–Saint-Girons Greenway and the V81 Greenway Tunnels offer accessible paths for pedestrians. For specific easy hiking routes, consult the Hiking around Cos guide, which includes options like the 'Hiking loop from Ganac'.
The town of Foix is a very beautiful medieval city with a distinct charm, offering a range of accommodation and restaurants. It's an excellent place to stop and explore, situated at the gates of the Ariège Pyrenees.
The best seasons for outdoor activities around Cos, particularly hiking and cycling, are generally spring (April to June) and autumn (September to October). During these periods, the weather is typically mild and pleasant, avoiding the peak summer heat and potential winter snow in higher elevations.
While not entirely hidden, Prat d'Albis is a pass that is 'too little known' according to local visitors, offering magnificent landscapes over Foix and the Ariège plain. It's easily accessible and serves as a starting point for walks, making it a rewarding discovery.
Visitors particularly appreciate the historical significance of places like Foix and its castle. The greenways are highly valued for their accessibility and scenic routes, offering opportunities for cycling and walking. The panoramic views from spots like Prat d'Albis are also frequently praised.
The town of Foix, a central hub for many attractions, has a train station, making it accessible by rail. From Foix, you can often reach nearby greenways and other points of interest by local transport or by starting your activity directly from the town.
Yes, there are several running trails in the vicinity. For example, you can find routes like the 'Vernajoul Viaduct Greenway – Viaduct with Scenic View loop from Foix' which incorporates the greenway. More running options are detailed in the Running Trails around Cos guide.


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