Several institutions collect statistical data about cities, regions, and countries for various
purposes. Yet, while access to high quality and recent such data is both crucial for decision
makers and a means for achieving transparency to the public, all too often such collections
of data remain isolated and not re-useable, let alone comparable or properly integrated. In
this paper we present the Open City Data Pipeline, a focused attempt to collect, integrate,
and enrich statistical data collected at city level worldwide, and re-publish the resulting …