23 Nov House inside stone
On the coast of Spain in the Costa de Morte has a very unusual house in stone with a stunning view of the Atlantic Ocean. Interesting production technology: to create an artificial boulder of this size with the required voids inside was created directly in the form of land. It poured concrete.
That space inside the boulder, which must be empty at step pouring filled with bales of hay. When all the construction frozen, the boulder was lifted and put into place.