Where was this castle built?

In the Fagaras Mountains in Romania, there is a scenic location called The Valley of the Fairies. Finding its natural beauty very alluring, a couple have built an eco- friendly castle there. According to My Modern Met, Razran and Gabriela Vasile, both singers, shifted from Bucharest to make their dream castle a reality! It is reported that they spent almost two years with an architect named Illeana Mavrodin to construct the castle. Named ‘ Clay Castle of the Valley of the Fairies’, it is made of 100 per cent organic straw, clay, wooden pillars, and sand.