The stunning black and white, high-contrasted images by Kai Ziehl will take your breath away. The German artist captures urban architecture at its finest: raw, towering and impressive. His work, though, stands out from the standard architectural photography. There is a poetic nature to his shots, a certain melancholia linking citizens to their cities, a point he makes by inserting single human forms in certain frames. More of his amazing work here, and follow him on Instagram.