Villefranche-sur-Mer is a commune in the Alpes-Maritimes department in the Provence-Alpes-Côte d'Azur region on the French Riviera. It is located about 6 km (4 miles) east of the city of Nice, separated by Mont Boron, Mont Alban and Mont Vinaigrier, and 10 km (6 miles) south west of Monaco. – wikipedia

Peyrepertuse. Bring your hiking boots and a walking stick. It's a long trek up.

Peyrepertuse is a ruined fortress and one of the Cathar castles of the Languedoc located high in the French Pyrénées in the commune of Duilhac-sous-Peyrepertuse, in the Aude département. It was associated with the Counts of Narbonne and Barcelona. It stands at 800m high. The name of Peyrepetuse derived from Occitan and means Pierced Rock. The castle was built on a strategic location by the kings of Aragon (lower) in the 11th Century and by Louis IX (higher) later on. The two castles are linked together by a huge staircase. The castle lost importance as a strategic castle when the border between France and Spain was moved in 1659, causing the castle to be abandoned. The castle ruins are impressive, set high on a defensive mountainous crag.  Even from the approach road it is difficult to see where the rock stops and the castle starts.  There are in fact two castles here, the later one added to an original, pre-French one. – catharcastles.info

Pont Saint-Bénezet.

The Pont Saint-Bénezet, also known as the Pont d'Avignon, is a famous medieval bridge in the town of Avignon, in southern France.

The bridge originally spanned the Rhône River between Avignon and Villeneuve-lès-Avignon on the left bank. It was built between 1171 and 1185, with an original length of some 900 m (2950 ft), but it suffered frequent collapses during floods and had to be reconstructed several times. Over the centuries, it became increasingly perilous as arches collapsed and were replaced by rickety wooden sections.

The bridge was finally put out of use by a catastrophic flood in 1668, which swept away much of the structure. It was subsequently abandoned and no more attempts were made to repair it. Since then, its surviving arches have successively collapsed or been demolished, and only four of the initial 22 arches remain intact today. – wikipedia

Carcassonne.

Carcassonne is a fortified French town in the Aude department, of which it is the prefecture, in the former province of Languedoc. It is separated into the fortified Cité de Carcassonne and the more expansive lower city, the ville basse. 

The fortified city itself is essentially of concentric design with two outer walls with towers and barbicans to prevent attack by siege engines. The castle itself possesses its own draw bridge and ditch leading to a central keep. The walls consist of towers built over quite a period. One section is Roman and is notably different from the medieval walls with the tell tale red brick layers and the shallow pitch terracotta tile rooves. One of these towers housed the Catholic Inquisition in the 13th Century and is still known as "The Inquisition Tower". Today there is a museum "Musée de la Torture", which shows some of the original torture equipment employed by the Catholic Church.

The newer part (Ville Basse) of the city on the other side of the Aude river (which dates back from the Middle Ages, created after the crusade) manufactures shoes, rubber and textiles. It is also the center of a major AOC wine-growing region. A major part of its income, however, comes from the tourism connected to the fortifications (Cité) and from boat cruising on the Canal du Midi. Carcassonne receives about three million visitors annually. – wikipedia

Collioure.

Collioure is a commune in the Pyrénées-Orientales department in southern France. It is situated in the south of France, 26 km (approx. 15 miles) from the Spanish border. Its small Catalan harbor is sheltered by a quiet bay where the chain or the Pyrenees meet the Mediterranean Sea. The exceptionally sunny climate and the north wind “Tramontane” makes Collioure a unique place where Catalan "art de vivre" have their origins. For centuries, a much sought-after treasure of nature has been part of Collioure's traditions: anchovies. This fish is the basis for many typical Catalan dishes and is still prepared in the original traditional manner. – Collioure Tourist Office