Different volumes meet here. Most striking is certainly the council wing. Its expressive, gigantic concrete body seems almost dangerous and could remind you of a futuristic spider. A 60-meter-long concrete folding structure forms the roof under which, behind a glass-reinforced concrete facade, there are meeting rooms. A concrete staircase leads the visitor to a terrace in front of the glass facade from where he can view the concrete structured facade. 

A flat L-shaped building, standing on pillars and covered with marble, surrounds the council wing. From here a bridge leads to one of the office towers. Standing on slim feet and with widely projecting storeys, they stand confidently on the site. A roof set off by an open floor gives the buildings an elegant appearance. However, this is only possible because of the external prestressed concrete elements which also function as a design element. The public building is located behind the two towers. A reinforced concrete skeleton structure, also covered with marble, like the towers, stands on a base and projects far beyond it.

Gradually, the reinforced concrete proved to be less durable than expected, the building had poor thermal insulation and the technical services were becoming increasingly outdated. By 2015, demolition and rebuilding were also being considered, but this would not have been cost-effective. At the end of 2015, the City Hall was placed under a preservation order.

After lengthy discussions among the citizens of Marl, the city council decided in September 2018 to completely renovate the town hall at a cost of 70 million euros. Work began in 2020 and is expected to last until April 2026 (last updated on September 27, 2024).