was to establish a plateau, some , to act as foundation. To this end, stones were piled up on the bank. The project was suspended in 1809. Construction resumed in 1837, under Louis-Philippe, following renewed tensions with the United Kingdom. The fortifications were completed in 1857, with sufficient room for a garrison of 250 men; however, by this time the range of cannons had significantly increased, covering the hitherto unprotected gap and making the fort unnecessary. After 1871, Fort Boyard was briefly used as a military prison, and abandoned in 1913, after which the unmaintained fort slowly deteriorated and crumbled into the sea. In 1950 it was made a listed building, and in 1961 was sold to Charente Maritime Regional Council. In 1989, the reconstruction of fort began in preparation for hosting the game show. An access platform for the berth of ships was built 25 meters from it (the old fort pier was destroyed long ago). The fort was completely cleared of a huge layer of guano (50 cm thick). In 1996, artillery platforms were also restored. However, the fort was still exposed to harmful influences from the sea. Therefore, in 1998, additional restoration work was carried out. The outer walls were completely cleaned and the sealing of the terrace completed. The final stage was the restoration of a central courtyard which was completed in early 2004. It has been used as the location for the filming of both the French and international versions of the TV game show of the same name since 1990, and was also the location for filming The Last Adventure, starring Alain Delon, Lino Ventura and Joanna Shimkus. References Notes Bibliography External links Boyard Buildings and structures in Charente-Maritime Sea forts Military history of France Artificial islands of France Boyard, Fort Islands of Charente-Maritime 1857 establishments in France