This is a detail of the museum "MARTa". The name is an acronym: "M" stands for the german word "Möbel" (furniture), ART for art and the "a" for ambience/atmosphere.
When viewed from a distance or as thumbnail this picture strongly reminds me of sand dunes, hence the caption.
I also tried a b&w conversion: [link]
. Feel free to compare the two and leave a note as to which one you like better.