Horst Griese
| 1987 - 1989 | Co-founder of the cultural festival Breminale |
| 1991 - 1998 | Director of the Künstlerhaus Bremen and the Galerie im Künstlerhaus |
| 1998 | Curator of the exhibition Do All Oceans Have Walls?, Künstlerhaus Bremen |
| 2001 - 2004 | Curator of the series Lichthaus plus neue Kunst, Bremen |
| 2002 - 2003 | Curator of the exhibition Niemand ist eine Insel, Bremen (with Eva Schmidt) |
| 2004 - 2005 | Curator of the exhibition and conference Changing Habitats, Inventing Communities, Building Cities, Bremen |
Curator of the exhibition A Lucky Strike - Kunst findet Stadt, Bremen |
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| 2004 - 2008 | Member of the Bremen State Advisory Council for Kunst im Öffentlichen Raum |
| seit 2006 | Membership in the Scientific Advisory Board of the Zentrum für Baukultur Bremen |
Member of the proposal panel for the Internationaler Preis für zeitgenössische Kunst der Prinz Pierre Stiftung, Monaco |
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| 2007 - 2009 | Curator of the project series BauStelle! Projects of contemporary art between city and harbour, Bremen |
| 2008 | Curator of the exhibition Raumaneignung. Three Films, Bremen (with Achim Bitter) |
| seit 2008 | Initiative treasure-land (together with Achim Bitter) |
| 2009 | Curator of the lecture series Unbestimmtes Gelände, Bremen (with Achim Bitter) |
| 2010 | Curator of the exhibition Klondike River, Bremen (with Achim Bitter, Andre Korpys and Markus Löffler) |
| 2012 | Curator of the lecture series Der Blinde Fleck, Bremen (with Achim Bitter) |