The subject of Morning Cleaning is an iconic example of modernist architecture, Ludwig Mies van der Rohe's pavilion for the International Exhibition of 1929, held in Barcelona. The pavilion was reconstructed in the 1980s and is now permanently open to the public. Wall was interested in the labour required to maintain the brilliance and transparency of the building, with its signature glass walls and marble surfaces. We see the pavilion's cleaner at work early in the morning before the building opens - another example of the artist’s interest in activities which are normally unseen or overlooked.