Here's the info from the NGA site :
Stitching up the NGA
Knitta Please covered an entire bus in wool at Plaza Luis in Cabrera in Mexico City in 2008.
Photo by Magda Sayeg, founder of Knitta Please
Tuesday 7 July – Sunday 12 July | Gallery foyer | Free
Be a part of this daring community project to transform the front entrance and foyer of the National Gallery of Australia with knitting.
From Tuesday 7 to Sunday 12 July, Knitta Please founder Magda Sayeg and Sydney artist Denise Litchfield, with a team of volunteers, will transform the front entrance and foyer of the National Gallery of Australia. Knitta Please is a tag crew of knitters who turned their frustration with their half-finished knitting projects into a phenomenon sweeping across the world.
Knitters are invited to help create pieces that measure 10–20 cm wide and 140 cm long, which will be stitched together to create coverings for 6 large concrete poles at the front of the National Gallery of Australia. Any colour, yarn and technique is accepted—the brighter and wackier, the better!