Due to its exceptional location at the tri-border region of France, Switzerland and Germany, the city of Neuenburg am Rhein has always been of special importance. As part of the State Garden Exhibition 2022, the town had the opportunity to reorganize urban areas. The site known as "Am Kronenrain", located between the city center and the redesigned green space "Stadtpark am Wuhrloch", played a significant role in this endeavor. The preliminary urban situation proved to be dissatisfactory with hardly any usable space and a height difference of around nine meters.

MONO created a distinctive ensemble – consisting of a parking garage, public space, bridge and tower – which fills the gap and serves as a link between the green space and the town center. Simultaneously, a striking city entrance has been created: the tower can be seen from afar and engages in a dynamic dialogue with the adjacent parking garage. In combination with the connecting bridge structure, it forms a clear landmark. The areas behind the parking garage serve as a base for the new public space: the Münsterplatz. From here, one can access the Bertholdturm via the bridge or continue the journey further down to the park and Rhine. In addition to being an access point to the park, the tower offers an observation platform with views of the picturesque landscape. 

The parking structure is designed as a three-story parking garage with 231 parking spaces. The balanced proportion of open facade elements provides the interior with daylight and allows a natural ventilation concept. Due to its central location, it helps alleviate inner-city traffic. The Münsterplatz was created on top of the parking garage. The previously abruptly ending street layouts now merge into a well-proportioned plaza. At the same time, the city plan accrues harmonious completion with the new western edge. In the future, densification through small parceling and mixed-use is planned.