When people from Pittsburgh talk about Fallingwater, then they usually rave about it. And the Western Pennsylvania Conservancy writes
  about this house: "Voted the most important building of the 20th 
century  in a poll conducted by the American Institute of Architects,  
Fallingwater is Frank Lloyd Wright’s masterwork." And it seems to be in 
line for the UNESCO World Heritage List. 
Hearing or reading this, then of course as a visitor one expects at least something like the Eighth Wonder of the World.
Seen
 from the outside, Fallingwater is awesome indeed. But being inside the 
building puts this impression a little bit into perspective.
The
 American architectural giant Frank Lloyd Wright (1867-1959) built 
Fallingwater in 1936 in Mill Run, about 50 miles away from Pittsburgh, 
as a weekend and holiday recreation home for the Kaufmann family who ran
 a department store
  in downtown Pittsburgh. (It still exists today: It's Macy's now, but 
this doesn't keep off autochthonous Pittsburghers from calling it 
"Kaufmann's". - Which is a general phenomenon: Pittsburgh consists from 
places and buildings that are long gone but still used by the natives as
 marker points: "Well, go straight ahead here and turn left where the 
cinema has been.") 
The
 way this house has been integrated into the landscape above a 
waterfall: without any doubts this is the fine art. Some of the 
architect's fingerprints are also catching the eye immediately, 
especially the building components he used (dressed stone, reinforced 
concrete, wood and metal) as well as the consistent coloring
 (metal parts are coated with "cherokee red" paint, the concrete has a 
shade of ocher named "covered wagon"). The colors find their 
counterparts in several room details and decorations. Most furniture is 
made from mahogany, the floor is covered with waxed flagstones. 
The
 embedding into the landscape works excellent; even inside the house one
 feels connected to the ambience. On the one hand this results from the 
waterfall that can be heard all over the place and always reminds to 
where you are, on the other hand it's the windows - several of them are 
frameless, the glass panes are set directly into the stone, so one 
doesn't even realize them as "windows". Besides this, all over the 
building (exept at writing desks) there's only indirect lighting, so 
there's a blend of artificial light and daylight. 
 Living Room (Photo: Wikipedia/Jeffrey Neal)
The
 living room, combined with dining area and a direct stair down to the 
watercourse underneath the building, is marveless. However, as soon as 
you leave it to see other rooms, the building, as spacious as it seems 
to be at first glance, can give you a trace of claustrophobia. I'm 6'2" 
above sea level, and I'm quite sure that people of this clear height 
existed already in 1936. It is annoying when you bump your head on 
stairways or you have to learn that some rooms are too low-ceilinged for
 people like me.
Some
 of the connecting passages are so narrow that one feels thronged, while
 the balustrades are so low that it's dangerous to life for small 
children.
There
 is no A/C in the house, only a mechanical ventilation system. 
Fortunately it works without power supply, but it doesn't prevent the 
house from being damp all over. The mold formation can be restrained 
only chemically.
Fallingwater
 includes a guest house and several bungalows for the domestic and 
service personnel. It is clear that it would not be possible to run the 
whole complex of buildings without staff. Their rooms, by the way, are 
not shown to the visitors. 
Fallingwater
 may be a work of art and probably was seen as this by the architect. 
But who wants to live in a work of art for more than a couple of days?
Wright,
 one may not believe it, didn't carry out the structural calculations 
for his masterwork correctly. Had the building contractor not nearly 
doubled the amount of steel - ignoring the architect's declared 
intention! -, the building would have collapsed long ago.
|  | 
| Backside | 
 | 
 | 
Which,
 after all, would have been a pity. The Kaufmann family used 
Fallingwater between 1937 and 1963. In 1964 they conveyed the building 
to the Western Pennsylvania Conservancy which cares for the building 
since then. The costs per year all-in-all are five million dollars, 
collected from donations, entrance fees and a shop.
But Frank Lloyd Wright was also able to do it different ways. Kentuck Knob
 shows it - another house designed by him, finished 1956 for the Hagan 
family at Chalk Hill, a couple of miles away from Fallingwater.
This
 house is much smaller than Fallingwater. It's from Wright's  "Usonian" 
phase, which means a U- or L-shape-outlined building around an inner 
courtyard, following the outlines of the classic American farm house. 
Kentuck Knob has a main building, a carport (which, by the way, was also
 invented by Wright) and an atelier. 
Even
 if it looks like the opposite on the photo above, the house is not 
windowless. On the yardside indeed there's indeed only a narrow line of 
windows under the copper rooftop, nearly hidden behind a wooden blind. 
The main windows are on the other side; Kentuck Knob is let in at 2050 
ft into a hill. 
Seen
 from the slope, one big window front is visible, reaching from the 
floor to the ceiling. This is one complete side of the living room. 
Besides this, the house has skylights. 
The
 construction material and elements are similar to Fallingwater; mainly 
it's cypress wood, sandstone and glass. If reinforced concrete has been 
used, it's not visible here.
Another
 design mark is the fact that there are no right angles in this house 
(or to be correct: only two, but they are well hidden). On the short 
side of the living room the architect repeats his idea to set the window
 pane directly into the stones of the curtain wall without frames.
Eye-catching
 in this house: For me, the living room is too big and too longish, 
while the other rooms - as already in Fallingwater - are strangely 
narrow, dark and look somehow crammed. And the kitchen, with all due 
respect, must have been constructed by somebody who never did the 
cooking himself; it's completely inexpedient.
The
 patio merges into a sculpture garden. There, asides from several 
interesting works by contemporary artists, the following can be found:
Let's hope nobody will take this monster accidentally for a work of art.
*
Links:
Homepage Fallingwater
Webcam Fallingwater 
Homepage Kentuck Knob
Western Pennsylvania Conservancy