During his visit to Beijing in 2013, Daan Roosegaarde, Dutch artist, designer, and innovator, discovered the air quality in the city was so poor that children were kept indoors and he was unable to see out the window of his hotel room.

But Roosegaarde saw more in the smog than most; he saw the possibility for clean air for the people of Beijing. He returned to his team of designers at Studio Roosegaarde and they set to work on designing, building, and testing (what they claim is) the world’s largest air purifier.

Standing at almost 23 feet high, the Smog Free Tower can clean 30,000 cubic meters of air per hour using the same amount of electricity as a home water boiler (about 1,400 watts). According to Roosegaarde, the system can collect, capture, and turn to dust about 75% of dangerous PM2.5 and PM10 airborne smog particulates, creating a bubble of clean air in its midst.

Studio Roosegaarde turned to Kickstarter to get the project going and were able to build their first Smog Free Tower in Rotterdam in September of 2015. One year later, with the support of the Chinese Ministry of Environmental Protection, the Smog Free Tower opened in Beijing’s 751 D.Park on the first stop of its global tour.

“We warmly welcome Smog Free Project to Beijing,” said Liu Guozheng, Secretary-General of The China Forum of Environmental Journalists. “This project is key in our agenda to promote clean air as a ‘green lifestyle’ among Chinese citizens. Our goal is to guide the public to a healthier lifestyle, low carbon development and to raise awareness amongst the public and reduce smog.”

Visitors have also enjoyed visiting the Tower during its stay, calling it the “clean air temple,” in reference to historic Chinese pagodas. During its stint in Beijing, the tower cleansed 30 million cubic meters of air, equivalent to the volume of 10 Beijing National Stadiums, and removed 400 grams of smog.

The smog particulates collected from the tower’s Beijing stay have been used to create 300 limited edition Smog Free Rings, each crafted by a member of Roosegaarde’s design team. The purchase of the rings aids in the development of the project and its global tour.

“Smog Free Project is about the dream of clean air and the beginning of a journey towards smarter cities,” said Roosegaarde. He and his team hope that the Smog Free Project will inspire citizens, governments, and other members of the tech industry to work together toward smog-free cities.

To learn more about Smog Free Project, Smog Free Rings, and the Smog Free Tower’s next stop on its global tour, visit Studio Roosegaarde’s website here.

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