Austin: https://data.austintexas.gov/
Baltimore: https://catalog.data.gov/dataset?publisher=data.baltimorecity.gov&organization=city-of-baltimore
Berlin: https://daten.berlin.de/
Cambridge: https://www.cambridgema.gov/departments/opendata
Chapel Hill: https://www.chapelhillopendata.org/page/home1/
Chicago: https://data.cityofchicago.org/
Dublin: https://data.smartdublin.ie/
Hartford: https://data.hartford.gov/
London: https://data.london.gov.uk/
Los Angeles: https://data.lacity.org/browse
Madrid: https://datos.madrid.es/portal/site/egob/
New Orleans: https://portal-nolagis.opendata.arcgis.com/
New York City: https://opendata.cityofnewyork.us/
Paris: https://opendata.paris.fr/pages/home/
Philadelphia: https://www.opendataphilly.org/
Providence: https://data.providenceri.gov/
Rome: https://dati.comune.roma.it/
San Francisco: https://datasf.org/
Seattle: https://data.seattle.gov/