© Zentrum Aletsch Pro Natura

Exhibition | Celebration | church service


Each year on the second Sunday in August, we celebrate the traditional Cassel Festival on the grounds of Villa Cassel. On this day, our doors are open to locals and holiday guests. We look forward to welcoming you! 
Open day 
After the open-air service, there’s good food, musical entertainment and a competition on the programme, not to mention fascinating guided tours of the historic Villa Cassel and numerous other attractions for young and old. 
The tradition lives on. 

Programme 2023 follows

Contact details
Pro Natura Zentrum Aletsch
3987 Riederalp
Phone: +41 27 928 62 20

All dates


Pro Natura Zentrum Aletsch
3987 Riederalp

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