Donald Judd (1928-94) was closely connected to Switzerland. From the early 1970s until his death, the American artist produced significant exhibitions there; more importantly, though his residences in Marfa and New York are legendary, less well-known is the hotel at Eichholteren which Judd transformed into an extraordinary residence on the banks of Lake Lucerne that tests the tensions and affinities between Swiss architecture and Judd's doctrines...