This concrete ring was probably meant to be a part of sewer pipeline. It got it's second life and is now a flower pot.
With an added bonus - red star mosaic makes it something special.
Standing out,
Shining bright,
With red star rising
Forever and ever.
Spotted, and the photo was taken, yesterday, on June 25th, 2017 at the Per拧man Museum, Koprein-Petzen, Bad Eisenkappel, Austria.