At 100 by 100 meters, the main square in Fürstenfeld is one of the largest in all of Styria. Where the Kastner und Öhler is located, there used to be a barracks. The soldiers needed space to drill. Since 2021, the Marienbrunnen has been playing all the "Spielerl`n" during the summer months. Atmospheric pieces of music in the rhythm of the melodies entwine colorful water fountains from the fountain.