Remember when Ai Weiwei took over parts of Tate Modern's Turbine Hall and covered it in millions of hand-crafted porcelain sunflower seeds? Now the Chinese artist has created another art installation which pays homage to the bike, the principal means of transportation in China.
Stacked, as it is called, features 760 - you guessed it - stacked bikes, that form a structure which can be viewed at a distance or by walking within it.
Unfortunately for us Brits, the installation is to be found in Italy, in the Galleria Continua in the Tuscan city San Gimignano to be more precise. So if you want to see it, you'd best book tickets now. It is on show until 16 February 2013.