The Blur Building is fascinating.
It was built in 2002 for the Swiss Expo. It was meant to convey a sense of a whirling cloud over the lake. Visitors were given raincoats.
I love the idea of a building that is amorphous, that cannot be focused on. Almost like a true object...always changing and never looking the same to each person who views it. A visual representation of Plato's Analogy of the Cave.