This is exactly what it is on the ground. I rode that thing on a bike and just imported my gps track.

more on this:
https://lemesosblog.com/archizei-simera-simantiko-ergo-ypodomis-ston-ypsona-fotografies/

>Is the intersection being rebuilt?
Yep, seems there will be a compact one-lane roundabout.

A week or so ago there were works on creating circle-shaped flower bed for the middle of the future roundabout.