This is 
Norwegian Wild Reindeer Pavilion, one of my favorite projects by
Snøhetta, a Norwegian design company. The transparent glass box shell reflects the mountains and the sky, making the pavilion blending into the natural environment. At the same time, the inner wooden soft organic core looks like rocks or river bed which were eroded by running water for thousands of years. Also the inner core is warm and welcoming for tourists to stay there, with a perfect view  from the transparent shell over the whole land.