"Octo was commissioned specifically for its site in Milton Keynes. Its twisting ribbon of stainless steel makes a figure of eight when viewed from one direction but changes radically as the viewer walks around the sculpture. The ribbon is based on a Mobius strip (with a double twist), a mathematical term describing a continuous surface created by twisting a long rectangular strip of stainless steel through 180 and joining the ends; the form neither has an inside nor an outside. The artist has sited the sculpture on a pool of water to emphasise its point of contact with the surface and to set up a continual play of shifting reflections as the shining sculpture reflects in the water and in the surrounding mirrored buildings. The sculpture is a memorial to Lord Llewelyn-Davis."
There is plenty of public parking around the GZ (free after 1800).
It's a fairly high muggle area during the day so some stealth will be needed.
The cache is NOT attached to the sculpture which is in the middle of a water feature.
PLEASE replace where found and don't leave exposed.