The installation Mikroskop was at the centre of Olafur Eliasson's solo exhibition Innen Stadt Aussen (Inner City Out) at the Martin-Gropius-Bau in Berlin in 2010, which also included several interventions in public space.

In the inner courtyard of the museum, Olafur Eliasson installed walls of mirror foil reaching up to its latticed skylight, thus generating a kaleidoscopic space that infinitely reflected the metal framework and the daylight from above. The mirror foil panels were supported by exposed scaffolding. Collapsing inner space and outside, Mikroskop realised a central aspect of the exhibition which closely concerned itself with the relationship between museum and city, architecture, space and perception.