While Falling Water may be Frank Lloyd Wrights most well known structure, I do have some reservations about it.  The owners of the land wanted Frank to build a house where they could enjoy the view of their water falls.  Frank, however, incorporated the house into the water falls.  So, when you are in the house, you can’t really see the water falls.  In order to see the water falls, you need to go down stream to a place where the house should have been built in the first place.