In February 2019, we were appointed to review a portion of the internal and external spaces of an apartment in Via Orti, in Milan.During our first meeting, the Clients expressed the need to rethink the organization of the living area in anticipation of an expansion of the family unit.This family need was then associated with the need to collect the very rich collection of books scattered around the house in a single location.The charm of the existing space immediately stimulated the search for an architectural solution that would characterize the rooms, compensating them for the small dimensions generated by the new subdivision.On this basis and in light of the uncertain performance data of the existing horizontal load-bearing structures, we reasoned about the use of a lightweight element that would define the new rooms by detaching itself, as far as possible, from the existing walking surface.The desire to add a touch of "mystery" to the distribution and discovery of spaces then animated the search for technology suitable for the realization of this precious "whim".