Ksiaz Castle, located on a steep rock by the side of the Pelcznica River in Lower Silesia, Poland was built in It lies within a protected area called Książ Landscape Park and is one of the city's main tourist attractions.(by Smo_Q)
Tschuggen Bergoase Spa / Mario Botta This spa, carved into a mountain, is built above sea level. It is truly a "place to escape" in Arosa, Switzerland. The architecture is magnficent. I am in awe of Mario Botta.