Directly on the Elbe, commanding a prominent position in the HafenCity, stands the Marco Polo Tower right beside the new Unilever headquarters, which was also designed by Behnisch Architekten. The tower punctuates the end of the route from the inner city out to the new attractions, the Cruise Ship Terminal and the Promenade on Strandkai. In its form and arrangement, it is a curved, sculptured building. There are 17 above ground levels, each turned a few degrees on their axis, allowing all 58 apartments views over the harbour and the city. Each apartment is between 60 and 340sqm in area. External variations in appearance are reflected in the interiors, in that no level, or apartment, is exactly the same. Load-bearing structural elements and necessary fixed services have all been reduced as much as possible.
The Marco Polo Tower is a holistic ecological building concept, the recessed facades are protected from direct sun by the overhanging terraces above so that additional sunshades are not necessary. Vacuum collectors on the roof, using a heat exchanger, turn heat into a cooling system for the apartments. There are also sound insulated air louvres in the sleeping areas which make natural ventilation possible without increased noise pollution from outside.