Get a quick look at our achievements and feel free to contact us should you need more information. The oldest fort with bastions in France! Built in the late 16th century, this fort has been slightly transformed through the ages to keep up with the evolution of siege warfare. Pay a visit to this outstanding castle with its strange keep, based on actual facts though. Discover what the interior of a 14th century keep looked like. These computer-generated images were created from actual descriptions of La Buissière castle dated 1339   How did castles and villages grow during the Middle Ages? What kind of defenses were erected to protect an ever-growing population? We took the example of Avalon How did they build these castles? We took an example through the erection of the second fortified wall and South Gate in 1312 to protect the village of La Buissière.