Born in Berlin-Charlottenburg in 1933, the sculptor Thomas Lenk decided to attend the Stuttgart Art Academy in 1950, where he studied, however, only briefly. After a subsequent apprenticeship as a stonemason, the self-taught artist experimented from 1960 in the "dialectical objects" in his sculptures with the integration of landscape reference and physicality in conjunction with abstract elements such as space and time. Starting in 1964, he created his "Schichtungen," which immediately made him internationally known. He consistently developed these innovative, spatial illusion-creating sculptures into his oversized, walk-in "Inn-Sculptures", which he realized before 1970 at the XXXV Biennale di Venezia as well as at the I Biennale of Nuremberg in 1969. The "Inn-Sculpture" presented here is a model created in the same year for the German Pavilion of the Italian Biennale and stands as an impressive testimony to Lenk's novel sculptural concept of making altered spatiality physically and emotionally tangible through sculptural as well as colorful interventions in the surrounding space.