Metropol Parasol is a giant wooden structure located in a major plaza in the old section of Seville, Spain. It was designed by the German architect Jürgen Mayer and consists of six parasols providing much needed shade. The locals refer to it as the mushroom due to its appearance from some angles. It is the worlds largest wooden structure, made of imported elm from Finland. The reason for the intense blue sky is because the photo was taken after sunset, during what photographers call the 'blue hour.'