Sanatorium Purkersdorf, Purkersdorf, Austria
Designed by Josef Hoffmann, built 1904-05, with interior furnishings by the Wiener Werkstätte.
If you have JSTOR access, Leslie Topp’s “An Architecture for Modern Nerves: Josef Hoffmann’s Purkersdorf Sanatorium” is a fascinating read. [Journal of the Society of Architectural Historians Vol. 56, No. 4 (Dec., 1997), pp. 414-437]