"Mail Art: [R]evolution", 23.6. - 31.12.2024, Markgräfler Museum, Müllheim Germany (2 works).

"Spuren der Zeit" ("Traces of time"), 31.5. - 7.7.2024, Dreiländermuseum, Lörrach, Germany (1 work).

"Rück-Ruf 3" ("Re-call 3"),28.4. - 30.6.2024, Galerie Haus Salmegg, Rheinfelden, Germany (4 works).

"Kunst tickt anders" ("Art ticks differently"), 5.10. - 5.11.2023, Burghof Foyer, Lörrach, Germany (1 work).

"Begegnungen 2.0" ("Encounters 2.0"), 23.9. - 19.11.2023, ART IN gallery, Meerane, Germany (5 works).

"Eiszeit" ("Ice Age"), 13.1. - 26.2.2023, Kulturfabrik, Schopfheim, Germany (1 work).

"Facetten der Natur" ("Facets of Nature" ), 8.8. - 31.10.2022, Town hall, Kandern, Germany (3 works).

"Rück-Ruf" ("Re-call"), 6.5. - 7.11.2022, Entenstein castle, Schliengen, Germany (3 works).

"Was zählt?!" ("What matters?!"), 24.10. - 21.11.2021, Dreiländermuseum, Lörrach, Germany (1 work).

"Unheimlich schön" ("Terribly beautiful"), 13. - 15.12.2019, Kulturfabrik, Schopfheim, Germany (1 work).

"Grand salon 2019", 12.1.- 17.2.2019, Villa Berberich, Bad Säckingen, Germany (1 work).

"Connect", 7.- 10.12.2018, Kulturfabrik, Schopfheim, Germany (1 work).

"International visionary art", MAG 13th contemporary art fair, 8.-12.11.2017, 2m2c, Montreux, Switzerland (3 works).

Thomas W. Bossert, Klaus Eichler, Brigitte Rosenthal and Andreas Streun: "Dioptrien plus 4" ("Diopter plus 4"), 24.3. - 13.7.2017, Entenstein castle, Schliengen, Germany (13 works).

"A Legacy of Light", 28.7. - 10.9.2016, Gloggnitz castle, Gloggnitz, Austria (1 work).

"Sommergäste 2016" ("Summer guests 2016"), 29.6. - 22.8.2016, Entenstein castle, Schliengen, Germany (4 works).

"Hülle und Fülle" ("Abundance"), 12.5. - 12.6.2016, Dreiländermuseum (Museum of three countries), Lörrach, Germany (2 works).

Klaus Eichler and Andreas Streun: "Böse Bilder" ("Naughty pictures"), 9.6. - 9.7.2015, Town hall gallery, Rheinfelden, Germany (19 works).

"Simboli e archetipi" ("Symbols and archetypes"), 3. - 5.10.2013, Associazione Dedalus Studi, Teramo, Italy (1 work).

"Fantastic Generations - Uncommon Visions", 4. - 26.8.2012. Museum of Fantastic Art, Palais Palffy, Vienna, Austria (1 work).

"Gegen unseren Willen" ("Against our will"), 10.9. - 7.10.1988, Town hall, Mainz, Germany (1 work).

Solo-show "Traum-Zeit" ("Dream time"), 9.6. - 23.6.1985, Kurhaus, Königstein, Germany (61 works).