Preservation of objects and documents related to the historical development of the municipality of Langwies and its neighboring communities Sapün, Medergen and Fondei, in particular the maintenance and promotion of the ethnographic collection of Dr. Georg Mattli in the ancestral home of Comandant Christian de Mattli in Sapün, including annexes; this collection, which primarily contains ethnographic cultural and everyday objects from Sapün and the upper Schanfigg valley, with special consideration given to those of the Mattli family from Sapün, is to be made accessible to an interested public.