![](https://static.dezeen.com/uploads/2016/07/underground-parking-garage-royalhaskoning-dhv-amersfoort-the-netherlands_dezeen_sq.jpg)
Dune-shaped car park by Royal HaskoningDHV doubles as a flood defence
Curving windows peep above the ground to bring light into this underground car park in South Holland, which is covered in grassy hillocks to replicate a dune landscape (+ slideshow). More