The treaty of Meaux-Paris, signed in 1229 at the end of the Albigensian Crusade, handed the French crown land to the west of the Rhone from Pont-Saint-Esprit to the Mediterranean and a joint interest in the city of Avignon. In 1290 the French king, Philip IV, ceded his claim to Avignon to his father's cousin, Charles II of Naples who was the Count of Provence through his marriage to Beatrice of Provence.
The Benedictine Abbey of Saint-André occupied a strategic position on Mount Andaon within sight of the town of Avignon which lay on the other side of the Rhone. Mount Andaon is a rocky outcrop with steep sides to the north and the east that rises 50 m above the floodplain of the Rhone.
The abbey had been founded at the end of the 10th century and possessed extensive property with over 200 churches spread over a wide area of southern France. In 1290 Philip IV instructed Adam de Montcéliard, the sénéchal of Beaucaire, to negotiate an agreement with the abbey to cooperate in the defense of the right bank of the Rhone. The paréage treaty signed in 1292 specified that Philippe le Bel could build a fortress with a permanent garrison next to the abbey and a castle by the river. The abbey surrendered temporal power but obtained protection from the unwanted pressure from the city of Avignon which wished to control both banks of the Rhone. By 1302 fortifications, including an initial Tour Philippe-le-Bel, had been built at the western end of the Pont Saint-Bénézet which lay less than kilometer from the abbey. In 1309, Pope Clement V moved the papacy from Rome to Avignon.
The fortress of Saint-André, with the curtain wall that surrounded the abbey, was built in several stages during the first half of the 14th century. The surviving manuscripts do not allow the construction to be precisely dated. A châtelain is mentioned in documents dating from 1314 and 1344, a guard is mentioned in 1318. The carved crest placed by the abbey above the entrance is dated 20 July 1367. This was probably when modifications were made to the entrance arch. The fortress was continually occupied by officers of the crown up to the time of French revolution.
The fortress was clearly visible from Papal State across the Rhone in the town of Avignon and was intended to demonstrate the power of the Kingdom of France.References:
Derbent is the southernmost city in Russia, occupying the narrow gateway between the Caspian Sea and the Caucasus Mountains connecting the Eurasian steppes to the north and the Iranian Plateau to the south. Derbent claims to be the oldest city in Russia with historical documentation dating to the 8th century BCE. Due to its strategic location, over the course of history, the city changed ownership many times, particularly among the Persian, Arab, Mongol, Timurid, Shirvan and Iranian kingdoms.
Derbent has archaeological structures over 5,000 years old. As a result of this geographic peculiarity, the city developed between two walls, stretching from the mountains to the sea. These fortifications were continuously employed for a millennium and a half, longer than any other extant fortress in the world.
A traditionally and historically Iranian city, the first intensive settlement in the Derbent area dates from the 8th century BC. The site was intermittently controlled by the Persian monarchs, starting from the 6th century BC. Until the 4th century AD, it was part of Caucasian Albania which was a satrap of the Achaemenid Persian Empire. In the 5th century Derbent functioned as a border fortress and the seat of Sassanid Persians. Because of its strategic position on the northern branch of the Silk Route, the fortress was contested by the Khazars in the course of the Khazar-Arab Wars. In 654, Derbent was captured by the Arabs.
The Sassanid fortress does not exist any more, as the famous Derbent fortress as it stands today was built from the 12th century onward. Derbent became a strong military outpost and harbour of the Sassanid empire. During the 5th and 6th centuries, Derbent also became an important center for spreading the Christian faith in the Caucasus.
The site continued to be of great strategic importance until the 19th century. Today the fortifications consist of two parallel defence walls and Naryn-Kala Citadel. The walls are 3.6km long, stretching from the sea up to the mountains. They were built from stone and had 73 defence towers. 9 out of the 14 original gates remain.
In Naryn-Kala Citadel most of the old buildings, including a palace and a church, are now in ruins. It also holds baths and one of the oldest mosques in the former USSR.
In 2003, UNESCO included the old part of Derbent with traditional buildings in the World Heritage List.