1993: Opening of the mini-museum MMM Curiosa in the Flohhäuschen (Flea Hut) in Sulden am Ortler. Admission free
1995: Trial opening of MMM Juval in Juval Castle in Vinschgau. Theme: Myth of the Mountain
1996: Exploratory talks on Reinhold Messner’s vision for a mountain museum in Sigmundskron Castle.
1998: The municipal authority of Cibiana di Cadore (Province of Belluno) decides to revitalize the fort on Monte Rite.
2002: In the Year of Mountains, Reinhold Messner opens MMM Dolomites in the rebuilt ruins on the summit of Monte Rite. Theme: Rock/Dolomites
2004: In Sulden am Ortler, Reinhold Messner opens the underground museum MMM Ortles. Theme: Ice
2006: After five years of construction work at Sigmundskron Castle, the heart of the MMM museum group is opened: MMM Firmian, the Enchanted Mountain.
2011: After years of restoration work, Bruneck Castle becomes the home of MMM Ripa, the fourth MMM museum. Theme: Mountain Peoples.
2012: In the Powder Tower in the centre of Bruneck, Reinhold Messner presents the history of mountaineering in the Puster Valley at MMM Biography. Admission free
2013: Place of encounter created for the Dolomites World Heritage site (UNESCO) in the village of Cibiana di Cadore. Reinhold Messner contributes an exhibition: MMM Archive.
2015: On the summit plateau of Kronplatz – between the Dolomites and the Central
Alps – Reinhold Messner opens a museum dedicated to traditional alpinism: MMM Corones, “the supreme discipline of mountaineering”.
2016: The Messner Mountain Museum is in the top 3 of the best employers in South Tyrol and gets the “Top Company Award”.
2017: Magdalena Messner takes over the coordination of Messner Mountain Museums.
The Messner Mountain Museum wins again the award as “Best employer of South Tyrol” in the category 20-50 employees (second place). Reinhold Messner gets the international award for architecture “Premio Andrea Palladio” for his cultural development with the Messner Mountain Museums.
2022: The Messner Mountain Museums are included in Lonely Planet's list of the world's best museums.