The technical and formal data on the porticoes of Bologna have been published on Iperbole, the official website of the Municipality of Bologna.
The Open Data portal of the Municipality provides two datasets relating to the 12 component parts of "The Porticoes of Bologna" and their numerous points of interest.
Consult the data here: https://www.comune.bologna.it/dati/dati-portici-bologna-patrimonio-unesco
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