The man freed from the hostage crisis from Algeria - thought to be Lou Fear from Louth, Lincolnshire - told Algerian television the soldiers who freed him were "friendly".
He said: "The guys who picked us up were wonderful, they were like long lost friends. They kept saying "terrorists do not come from Algeria".
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The Leeds boxer will find out tonight if she has won the coveted Sunday Times Sportswoman of the Year award.
The walls had been closed to the public at the weekend amid fears of a collapse.
The artwork will act as a sundial, highlighting up to 24 key dates that have shaped the history of Hull and the world.