rOCologneKVB is a sample package to retrieve various open data sets offered by the city of Cologne (Cologne/ Germany) or related partners such as the Koelner Verkehrsbetriebe which is company providing public transportation services for Cologne citizens.
Consequently, the data provided here are basically offered as open data, easily accessible, fit my interest somewhat, are thematically related (Cologne) and can be retrieved in reasonable amount of time.
The Open Data and Open Government Portal for North Rhine Westfalia is located here: https://open.nrw .