How does museum work change when exhibiting and mediation are understood as an integrated concept? In the context of critical museology, museums question their societal role and position themselves as places for knowledge exchange and a participatory connection between history and the present. Mediation is understood as an independent practice that questions, expands, and transforms exhibitions and institutions. This volume brings together contributions from international representatives of various types of museums, offering insights into the diverse positions and the translation of the "big ideas" into practice.