It's often claimed that through his ships, bridges, tunnels and railways Brunel played a critical role in creating the modern world. In the soaring ambitions of the Victorian age, nobody thought bigger than Brunel. He made plenty of mistakes, some of them ruinously expensive. But he also designed and built several structures which are still with us to this day. For those we have to thanks he man who was famously described as "in love with the impossible."