I've been researching architecture lately and these are some of my favorite inspiration images..
The top left image is Russel Wright's Manitoga.. nestled into a rock quarry in the Hudson River Valley. I love the way it blends into nature and the handcrafted mixed with modern qualities. (the image is from this book, which I'm dying to get). more images here.
The bottom two are another Russel Wright space, a townhouse in New York City built in 1949. Again, I love the mix of structure with nature and the windows. More info and images here.