 These are to represent the flowing molten steel, which made Sheffield famous, and also the water of Sheffield's rivers, the Sheaf, River Don, River Rivelin, River Loxley and Porter Brook, which were used to power the mills which drove Sheffield's industry.The site contains several memorials for citizens of Sheffield who served in wars, including in the Spanish Civil War and another plaque commemorating Sheffielders who gave their lives in all conflicts, including the Korean War.It also contains a memorial to Hiroshima, unveiled on Hiroshima Day, 8 August 1985, in the presence of three survivors of the atomic devastation.