SPIRAL is the permanent sculpture for ABT, advisors in building technology in Velp NL. By folding steel a self-supporting construction is made which remains open to the influence of wind.

During the 3rd year of his fine art academy Daan Roosegaarde won a competition to realise SPIRAL to celebrate the anniversary of ABT, a renowned engineering company in the Netherlands. The 3.8 tons of steel artwork was made based on a cardboard model of Daan, and realised in collaboration with the engineers of ABT. It is his first permanent public artwork.