Below can be found one example of a gothic tower. There are many such “Tour Magdalas” throughout France. Many more of them can be found throughout Europe.
The Tour Magdala in Rennes-le-Château is better known in English as a FOLLY.
In the case of Abbé Bérenger Saunière, the definition of the word FOLLY would be: “a costly ornamental building with no practical purpose, especially a tower or mock-Gothic ruin built in a large garden or park.”
Nothing special.
Eugène Berbolingot is a popular photographer.