At a length of 80.2 m the arched escalators are the longest installation in Germany and Western Europe. They succeeded the previous German leader: the 58 m escalator to the Ruhr Museum in the disused coal mine Zeche Zollverein (and 24 m conveyance height). The escalators rise 21.43 m. If their incline were as steep as that of conventional escalators (30°), the conveyance height would be almost 40 m.

The length and conveyance height of the escalators, combined with their arched form required exceptional constructional effort. The order was awarded to Kone in 2007. Here an experienced team headed by Heiner Zeiger developed the escalators, which are unique worldwide, in just under a year. A distinction must be drawn between these systems and curved or spiral escalators.

With the exception of the truss, which had to be cut to size to suit the situation on the spot, most of the components were part of normal serial production: the aluminium steps, step or chain guides, handrail system and much more. The sectional drives (with special drive wheels and sensors), step chains, base and controller unit, with which the converters of the individual drives are connected by a BUS-system, are custom-made.