1998-2019 the Atelier Friedrichstrasse,  home of studio Thomas Kellner till 2019, presented plenty of highly respected exhibitions and open studios. More than 300 artists from all over the world and each continent exhibited their works here. Above all these great events, the studio serves as a place of inspiration for the artist Thomas Kellner and many others every day. Many of the ideas, projects and artworks were born here. The white tank becomes a think tank, which changes with every exhibition or at daily work to a new reality. By his studio, Thomas Kellner is working worldwide with many curators, museums, galleries and journalists together. In his project and series of exhibitions photographers:network amongst others he cooperated with the George Eastman Museum/USA, Moscow Museum of Modern Art/Russian Federation, Künstlerhaus Bethanien, Berlin, Germany, Cleveland Museum of Art, Cleveland, USA, Klompching Gallery New York, USA and San Francisco Museum of Modern Art, San Francisco, USA.