Tham & Videgård (previously featured on Brand66) won a competition for a new landmark and observation tower in Järfälla, west of Stockholm. Based on the principle of a double helix spiral, the structure is stabilized by a transparent outer skin made of steel wires. The two interlocking stairs are painted in different shades of red (the classic Swedish faluröd color). The double stairs allow for different groups to move independently up and down the tower. Built using timber construction, the tower can be disassembled and reused again after its twenty-five year installation period.