Massive "smog-eating" mural painted in Rome's Ostiense district.

A mural covering 1,000 sqm of the façade of a seven-storey building in Rome has become Europe's largest mural created with anti-pollution paint.
The work, by artist Federico Massa (aka Iena Cruz), features a tricoloured heron, an endangered species native to coastal areas of the Americas. 
Cruz's massive mural was inaugurated on the afternoon of 26 October on Via del Porto Fluviale in the capital's Ostiense district by the president of the Lazio Region, Nicola Zingaretti.
The paint used in the mural, which is located at a busy traffic junction, is capable of cleaning the pollution in the air to the same extent as a 30-tree wood.
Titled Hunting Pollution, the work was the brainchild of Yourban2030, a female non-profit group led by Veronica De Angelis, and is part of the "regenerative street art" movement.
Ostiense is already synomous with urban art, containing some of the capital's most well-known street art murals such as the Ex Caserma façade on Via del Porto Fluviale by Blu (opposite Cruz's new work) and the Wall of Fame by JB Rock, a couple of blocks away.
For more information on Rome's street art scene see our guide to the best street art in Rome.