Piccadilly Circus and Times Square are poised for a billboard overhaul. But where are the world's "best" billboard locations?
New York's Times Square has unveiled the world's biggest digital billboard. It stretches the whole block between 45th and 46th Street on Broadway - some 330ft (100m) and eight storeys high.
It's been snapped up initially by Google for an undisclosed cost, but future advertisers can reportedly expect to pay about $2.5m a month.
For that you get millions of eyeballs, gazing up at its bright lights. On average 300,000 pedestrians - almost 500,000 if you include those in cars and buses - pass through Times Square every day.
London's Piccadilly Circus is witnessing an ad break of its own. More
