THIS PIECE of public art has been created by a Swiss artist on one of the locks of Cardiff Bay barrage.
It was created by Felice Varini and is one of several pieces scattered around Europe.
If you stand in one particular spot on the barrage, all of the lines join up to form a set of concentric circles.
Felice Varini is known for his geometric perspective paintings of rooms and other spaces, using projector-stencil techniques.
His work consists of unconnected lines which form shapes if viewed from a particular angle.
According to art critic Joël Koskas: "A work of Varini is an anti-Mona Lisa."
* What do you think of the artist's work on the Barrage? Let us know by leaving a comment below or e-mail the Penarth Times.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules hereComments are closed on this article