What is This?

During our travels around our area in Spain, we have seen this structure being built.
It is in a strange location, not in an urbanisation and not in a commercialisation, it just sits alone on a hill. There is a road near it, not a major road more a ‘rat run’.
For a long period all that stood was a concrete skeleton, however, recently there has been more activity to finish the building.
The lady of the Villa and I just cant make out what it is. To small for a villa, to remote to be a shop.
We await completion!