>> the boys had a western uniform. they had trousers and shirts and jackets and shoes. >> faifel shaler had taught a number of bin laden's brothers. osama's family was well-known in saudi arabia. his father's career was the stuff of legend. >> the bin ladens were almost a storybook success. >> reporter: in saudi arabia, the bin laden name is everywhere. it's a vast empire with humble beginnings. the family patriarch, mohammed, seen here in rare photographs, rose from a menial laborer to head one of the largest and most successful construction companies in the middle east. >> he built the airport. he built virtually everything that was standing more than two meters high had been built by bin laden. >> reporter: he had more than 50 children. osama was born in 1957, here in