In his time Isambard Kingdom Brunel was the world's greatest engineer. His list of achievements is truly breathtaking: the Thames Tunnel, the first underwater tunnel in the world; the SS Great Britain, the first propeller-driven ship; the Clifton Suspension Bridge, then the longest span of any bridge in the world; and the Great Western Railway. History has been kind to his memory: many of his creations still exist and he is lauded by historians as a truly 'Great Briton'.In this full-scale biography Colin Maggs presents a portrait of a complex, ambitious and determined genius.