A dramatic vertical greenhouse shaped like the wings of a dragonfly could revolutionise farming in cities around the world, according to its architect.

The bizarre looking 600m tall building was designed by Belgian designer Vincent Callebaut and would be based on Roosevelt Island in New York. Spread across 132 floors it would provide urban farming space with enough room to raise cattle and poultry and 28 different types of crops. There would also be space for housing and offices with walls and ceilings used to grow kitchen gardens. Each level would be cultivated by the residents.