A tree-covered, 180 meters tower could become London's next sensational skyscraper - and most sustainable - building in London, United Kingdom. It's covered in more than 8,000 plants and 58 floors of solar energy. Blackfriars Bridge area quite literally lives in the shadow of London's soaring skyline, but that could all change. 22 years old, Architectural Designer, Elija Halil has just unveiled a proposal for a tower by the One Blackfriars building that would act As a "Carbon Sponge" structure, it would be capable of trapping a huge volume of emissions to combat the greenhouse effect and help achieve carbon neutrality by 2050.