When you visit one of the many incredible and iconic landmarks that stand in cities across the globe, it’s mind bending to imagine the effort, time and skill it took to actually build it. In fact, it’s almost completely beyond comprehension. These intriguing images show some of the most amazing buildings across the world during their sometimes painstakingly long constructions, as well as the sheer amount of man power that went into getting them built and completed. Here are 11 incredibly iconic landmarks before they were finished.