In the Conflent area


On the UNESCO World Heritage List
Set at an attitude of 1600m, Mont-Louis is the highest fortified town in France. It was built by the great French military engineer Vauban in 1681.
The citadel and ramparts: Open from 01/09 to 30/06, visits at 11:30am and 2pm, except Sundays. Visits depart from the Tourism Office. Booking required for groups. Closed during the winter holidays.

Tourism Office

Tel : +33 (0)

  • Cité fortifiée mont Louis PO
  • Four Solaire de Mont-Louis PO
  • Four solaire de Mont Louis Sud de France
  • Cité Vauban Mont Louis 66
  • Four Solaire de Mont-Louis 66
  • Train jaune Pyrénées
  • Mont Louis cité solaire Conflent


Come and visit the first solar furnace in the world.

A fascinating visit for all ages. The guides will tell you all about the techniques used and let you visit the heart of the installations.

It was built in 1949 just after the Second World War at Mont-Louis in France. It was the first installation of its kind in the world, and was a forerunner for the Odeillo solar furnace built just a few kilometres away 15 years later.

In addition to being used for research, since 1993 it has been the furnace most used for industrial and craft production (firing ceramics).

Open all year round except from 12 November to 9 December.

Solar Furnace

Tel : +33 (0)


With departures from the station of Mont-Louis La Cabanasse, the yellow train runs for 62km between Villefranche de Conflent and Latour de Carol, offering extraordinary panoramic views.

Building the line was an extraordinary technological challenge, requiring no fewer than 650 engineering works (including 19 tunnels and several viaducts), and building the line up to the highest railway halt in France (at Bolquère) was perilous work indeed.

Buy tickets directly from the stations.

Station Mont-Louis

Purchase tickets directly from the stations.
Tel : +33 (0)