![](https://static.dezeen.com/uploads/2015/01/Casa-MR-by-Luciano-Kruk-sq_dezeen_468c_2.jpg)
Concrete retreat by Luciano Kruk sits on a sand-dune in Buenos Aires
A concrete volume projects from the top of a sand dune to form the upper level of this holiday home on the Argentinian coastline by local architect Luciano Kruk (+ slideshow). More