Designated as a historical monument in 1987.
In the 17th century, it was mentioned that there was a tower located next to an old chapel dedicated to Our Lady of the Seas or Our Lady of Dolours and which was part of a fortified complex (which has since disappeared). This tower had a military function until the beginning of the 19th century and during the two World Wars but, in the interim period, it had a religious function evidenced by the building of an outside oratory. In 1912, the architect Pierre Saint-Germier redeveloped the ruined building, taking his inspiration from medieval buildings, and it became a tourist destination. The Bordagain Tower was also, for a time, a tearoom. Then it became the property of the local council and was restored in 2010. Nowadays, it hosts exhibitions and conferences.