Tofuku-ji temple, Kyoto, Japan. The patterns are simply breath taking. Utterly simple but powerfull ;)
Kawai Kanjiro's House in Kyoto, Japan 河井寛次郎記念館
The Carta furniture series by Shigeru Ban Architects is made with plywood legs and a seating surface comprised of small paper tubes. The series includes a chair, stool, chaise lounge, and a room partition.