With so many monuments, architectonical wonders from different ages of time, history and excitement, many of those who go around Barcelona don't even bother to notice the huge amount of active cranes that take part of the Barcelona landscape. Yellow, red, green, blue; big or small...they are everywhere! Like giant prehistorical birds that seem to have landed over the city, they look everything from above and built the future, as well as rebuilt the past. Some of them can already be considered mythicals, like the ones with their nest in the unfinished Sagrada Familia Temple, a masterpiece of Gaudi. Many of the thousands of tourists that take pictures of that church every day are not aware of the presence of the gruas in their composition. But there they are, precise and attent. Meanwhile, other ones do the job of lifting modern buildings on the developing areas of the catalan capital. These may be, in a few decades, the ones to be apreciated and studied by the ones who will pass by.