Therme Vals, in Switzerland. Architect: Peter Zumthor. Construction: 1993-1996. Designed by Peter Zumthor, this spa was built over the only thermal springs in Graubünden Canton, in Switzerland.

Water House 2.0 in Taiwan is an experimental project testing the heating and cooling system "And if you think about that potential, I think even crazy ideas are somewhat warranted," he continued.