The ‘City Respiration Skyscraper’ designed by Czech architects Pavlína Doležalová and Jan Smékal is a helicoidal 240 meter-high structure designed to clean the air of the most polluted cities worldwide. Its primary structure is a concrete ribbon covered by air-cleaning algae. The outer cellular structure is a three-dimensional cluster of individual concrete three-spike units inspired by sea sponges.
This helicoidal structure acts as a chimney where warm and polluted air is captured at the bottom and filtered and oxygenated by the algae and a specialized water-sprayed system. A network of these skyscrapers strategically placed in the most polluted areas could clean a city in a couple of weeks.
To commemorate the 9th Annual Skyscraper Competition, eVolo is publishing the Limited Edition Book "eVolo Skyscrapers 2" which is the follow-up to its highly acclaimed book “eVolo Skyscrapers”. The 628-page book examines 150 projects received during the last years of the competition. Only 1000 copies are available worldwide.