There is no doubt that the construction of the Barcelona Pavilion by Mies van der Rohe was designed to reaffirm the Modern Movement. This "icon" of the movement, deeply embedded in the architectural imagination, was built to be ephemeral. At the end of the International Exposition, the pavilion was dismantled; however, it was reconstructed 54 years later, sparking a debate within the architectural field regarding the authenticity of this replica.