Foster + Partners has quite the pipeline of projects and this supertall skyscraper, Russia Tower, is one of them. Russia Tower is expected to be the tallest building in Europe, and one of the tallest in the world, coming in at a whopping 2,009 ft tall, just behind Taipei 101 and Burj Dubai. Even further, it’ll be the largest building in the world with a natural ventilation system. Foster + Partners designed the building with an "energy cycle" system, which is a hot water circuit that runs through the building distributing the energy to regulate temperature and heat water. The energy cycle system is intended to chart new territory in sustainable architecture.