Designed by Pechet and Robb for the 2006 Venice Biennale of Architecture to represent Canada, SweaterLodge is a building made from a giant orange polar fleece sweater (12.2m x 26.5m). For a better idea, check out some pictures.

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After the exhibition, the 400 square meter sweater will return to Canada for a public “sew-in” event where it will be recycled into hats, scarves and mitts for charitable giving.