The first castle at Bonaguil was constructed after the middle of the 13th century, on a rocky spur, probably by Arnaud La Tour de Fumel. The single entrance to the keep, built above a natural cave, was a door six metres up, accessible by ladder.
It was entirely restructured at the end of the 15th and beginning of the 16th centuries by Bérenger de Roquefeuil, who added all of the defensive improvements of the end of the Middle Ages. The main danger at the end of the 15th century came from artillery. For protection, it was necessary to keep the enemy's cannons at a distance. An external wall, 350 m in length, was added to the castle, with lower curtains retaining a mass of earth which cushioned the artillery shots. This curtain wall was reinforced with small towers and equipped with guns.
When Bérenger died in 1530, the castle was not yet adapted for siege warfare, but it remained an imposing fortress. During the Wars of Religion, the two brothers fought in opposite camps, and the castle was taken in 1563. A first restoration took place in 1572. In debt, Antoine had to give the fortress to the lord of Pardhaillan in 1618, before being able to buy it back several years later.
François de Roquefeuil, a distant relative with some claim to the castle, took possession of it in 1656, kept and pillaged it for almost a year before abandoning it.
In the 18th century the earthworks to the west of the castle were enlarged and laid out as a large terrace and became a pleasant promenade. New apartments were built in the south, outside the inner wall, thus benefitting from a better outlook.
As well as being an impressive feat of military engineering, the Chateau Bonaguil is also a lovely chateau to visit.
References:The Basilica of Santa Maria in Trastevere is one of the oldest churches of Rome. The basic floor plan and wall structure of the church date back to the 340s, and much of the structure to 1140-43. The first sanctuary was built in 221 and 227 by Pope Callixtus I and later completed by Pope Julius I.
The inscription on the episcopal throne states that this is the first church in Rome dedicated to Mary, mother of Jesus, although some claim that privilege belongs to the Basilica di Santa Maria Maggiore. A Christian house-church was founded here about 220 by Pope Saint Callixtus I (217-222) on the site of the Taberna meritoria, a refuge for retired soldiers. The area was made available for Christian use by Emperor Alexander Severus when he settled a dispute between the Christians and tavern-keepers.
The church underwent two restorations in the fifth and eighth centuries and in 1140-43 it was re-erected on its old foundations under Pope Innocent II.