When visiting Sagrada Familia, it’s easy to imagine this enormous, hugely complex cathedral will never be finished. In construction for over 130 years, it’s easily one of the most intricate building designs anywhere, and staying true to Antoni Gaudi’s master design has proven to be very difficult and expensive. But in 13 years, the construction is set to be finished, and the remarkable, bizarre, and beautiful structure should be complete. Via FastCo Design: