This zero-emissions building actual removes pollutants from the air.

Palazzo Italia: Gabriele Peressutti. Date: Aug 2 2015. Source: @verogabri. License: CC BY-SA 2.0.

Palazzo Italia, Milan Italy (map). Constructed as part of the Milan Expo 2015. Architects: Nemesi & Partners. Built with a special air-purifying cement created by Italcementi, and thanks to extensive use of photovoltaic glass and photocatalytic concrete cladding, it is a zero-emissions structure, and is capable of covering its energy needs autonomously. (Designers: Styl-Comp technology)

The facade, a mixture of cement and titanium dioxide, captures nitrogen-oxide pollution and converts it into a harmless salt that easily rinses off the walls when it rains.

Palazzo Italia also consumes 40 percent less energy than a conventional building of its size, and emits zero air pollution.

“We wanted the building to be an osmotic organism,” says lead architect Michele Molè … .*

* Nicole Lou: A Building That Easts Smog. In: (technology). Date: Feb 9 2016. URL: Last viewed: Dec 26 2016.

Image: Palazzo Italia, Gabriele Peressutti (Aug 2 2015). Source: @verogabri. License: CC BY-SA 2.0. URL: Last viewed: Dec 26 2016.