The 'Spiral of Wuppertal', Germany, 15 November 1960.
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'The Spiral of Wuppertal' is the name given to this structure by residents of this city, following the inaugration of this novel parking ramp. The ramp leads to a roof-top parking lot of a large department store, where 360 vehicles can park while their owners are shopping in the store. The parking fee is credited in full against any purchases made in the store.'