Isambard Kingdom Brunel's Royal Albert Bridge spanned the Tamar River and carried the Cornwall Railway between Devon and Cornwall for the first time. Still in use today as a rail bridge, Prince Albert opened the structure just five months before Brunel died and remains one of the legendary engineer's great triumphs. An innovative combination of suspension and arch with only one central pier, the bridge covers 2240 feet and used 5000 tons of wrought and cast iron in its construction. (By John Osborne)