A Spanish brother-sister duo has turned a seemingly ancient barn into a contemporary masterpiece. Fair Companies describes how Carlos Alonso and his sister Camino, who run an architecture company together, spotted the stable in the mountains of Extremadura, Spain, and knew that their extended family would find it a unique place.

So the two got to work and started adding massive windows to let in light. This would not only illuminate the south facing barn but provide heat in the winter. Fair Companies explains that the former barn also works completely off the grid, sourcing water from a stream uphill, and utilizing solar and hydropower.

Once inside, the old Spanish barn has a surprising hint of Japanese flare, something Carlos and Camino love and specialize in. The modern furniture, cement, and steel beams are a wonderful juxtaposition to the largely untouched old barn. Carlos and Camino have also infused nature into nearly every space in the home including an interior patio, a stone water fountain, and bedrooms that boast giant windows with even better views.