Ludwig Mies van der Rohe
In the 1920s, Ludwig Mies van der Rohe presented skyscraper designs with X-ray aesthetics, featuring transparent façades and skeletal steel structures. He used illustrations of X-ray images and bones in his articles for illustrative purposes and referred to his work as “skin-and-bone architecture”. The idea of making internal structures visible became a central architectural principle for Mies van der Rohe, one that recurs in many of his later buildings.