Galvani House / christian pottgiesser architecturespossibles, located in Paris. Separated rooms on different levels create pockets of areas that are private whilst promoting intermingling through circulation and a common plane.
Ice cave in the Skaftafell National Park in Iceland. Ice caves collapse and new ones form as each glacier grinds slowly towards the sea. Local guides can help you (without dying) find one. (Visit Skaftafell National Park in Iceland.