Dedicated to offering the public "powerful experiences with art and the urban environment, " the fund's other projects have included bringing Jeff Koons's topiary-puppy sculpture to Rockefeller Center and Rob Pruitt's statue of Andy Warhol to Union Square.

WSJ: Discovering Columbus | A Monumental Problem | By James Panero

Rideability is not the main aim - his bikes are more pieces of sculpture than urban transport solutions.

BBC: Dome wheels in street culture

This is the UK's largest permanent street art project and the biggest urban arts festival in Europe, attracting the world's leading urban artists to converge and create a series of temporary and permanent street art installations and sculpture, including some of the world's largest scale outdoor paintings.

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