Rob Bell reveals why the design of the Severn suspension bridge revolutionised bridge-building and the dangers involved in the construction.
Rob Bell looks at two bridges by British architect Lord Norman Foster - the Millau Viaduct in southern France and London's Millennium Bridge.
Rob Bell reveals that the building of the Brooklyn bridge was a classic New York tale of big money, corruption, ambition, death and tragedy.
Rob Bell explores the history and construction of the world's first bridge to be constructed entirely from iron.