Therme Vals, the spa complex built in the Swiss Alps by celebrated architect Peter Zumthor, became an icon of contemporary architecture soon after its opening in 1996. Inspired by the spa s majestic surroundings, Zumthor built the structure on the sharp grade of an Alpine mountain slope with grass-topped roofs to mimic Swiss meadows, captured here in a series of sumptuous images. "Peter Zumthor Therme Vals," the only book-length study of this singular building, features the architect s own original sketches and plans for its design as well as Helene Binet s striking photographs of the...