under the viapac, vilmouth installed a model of the vauban fort of saint-vincent-les-forts on the access path to the site, facing the fort . unlike the building that suffered the marks of time, the model is an exhaustive representation, to the image of the original architecture. this device brings the visitor to perceive sculpture as the nucleus from which the fort was built. this is both a reflection on architecture and a working memory inciting the public to mentally reconstruct the architecture of the fort by operating a back and forth between two scales of perception: that of the miniature model and that of the monumental building .