The interactive sculpture Babbel offers an invitation to the inhabitants of Arnhem Presikhaaf to join in conversation with each other; it does this both through its form and function. The word “babbel”, Dutch for an informal chat, is split into its two syllables “Bab” and “Bel”. These two parts frame the entrance of the local Municipal Center like brackets. But the sculpture also has an interactive function relating to communication: If you whisper into the focal point of one of the paraboloids you can be audibly heard in the focal point of the opposite paraboloid, which is located 30 meters away.