Sigurd Lewerentz was a Swedish architect working from the early 1900's to the 1960's. We love this detail above, and while it's not from one of his residential designs, we can really see doing this in a home. The bathroom tap is really a lack thereof, with exposed plumbing pipes elegantly doing the job:
The sheer simplicity of material and detail stripped bare in this design is just beautiful. The tap is located in Lewerentz' St. Petri church. For more glimpses of his work, see this set by seier+seier+seier on Flickr.
Image: Flickr user seier+seier+seier, licensed for use under Creative Commons.