Set on a hilltop surrounded by vineyards and cypresses, the Gallo-Roman villa of Séviac was a luxurious residence, spread over almost 6500m2. It is today one of the largest Gallo-Roman villas known in the south-west of France. The villa was built in the 2nd century AD and reconstructed in the 3rd and 4th centuries. Later in the 8th and 9th centuries the place was used for a church, burials and necropolis. The villa is distinguished by its exceptional set of Roman age mosaics (over 625m2) and vast baths.
Olargues is a good example of a French medieval town and rated as one of the most beautiful villages in France. It was occupied by the Romans, the Vandals and the Visigoths. At the end of the 11th century the Jaur valley came under the authority of the Château of the Viscount of Minerve. The following centuries saw a succession of wars and epidemics, and it was not until the 18th century that Olargues became re-established. This was due to the prosperity of local agriculture and artisanal industry.
The Pont du Diable, 'Devil's Bridge', is said to date back to 1202 and is reputed to be the scene of transactions between the people of Olargues and the devil. The old village is clustered around the belltower, which was formerly the main tower of the castle (Romanesque construction). The old shops have marble frontages and overhanging upper storeys. A museum of popular traditions and art is to be found in the stairs of the Commanderie.