SpaceWalk was designed as a spectacular large-scale traversable sculpture for the hills of Hwanho Park in the South Korean coastal city of Pohang. This 333-metre-long, gleaming silver track looks like a rollercoaster when seen from a distance. Seen at closer quarters, it reveals itself to be a winding stair, curving through space in spectacular undulations. Visitors ascend by means of a central access stair, and can then climb along the track in one of two directions. On one side, a gently rising passage awaits, leading to a broad curve at 20 metres above the hilltop. From here, they have a magnificent view of the sea. In the other direction, the walkway leads more steeply upward, as visitors traverse a helix that, seen from a distance, appears to be an exact circle form. Both of these walks feed into a central loop that cannot be walked on and is meant purely to be looked at.

With its dialectic of acceleration and deceleration, this sculpture was developed as a commentary upon the structural transformation of the industrial city of Pohang, and to prompt questions concerning the designing of our future.
At night in particular, the brightly-illuminated walkway appears like a sigil drawn in the sky, appearing to represent different things depending on where one is standing. Thus, the sculpture also references local mythology and a tradition of sky-gazing, and also makes playful use of relativity.