In 2014 "the Urban Heritage Research Cluster as part of Critical Heritage Studies, University of Gothenburg, organized seven seminars under the heading: “Heritage as Common(s) – Commons as Heritage, or HAC-CAH. The seminars have brought us to places like Ground Zero in New York, a creek in Olympia, Café The Swan in Amsterdam, Ellis Creek Water Recycling Facility in Petaluma, St Ann´s Church in Manchester, Central Park in New York, the Old city of Jerusalem, Stortorget in Malmö, the Al-Qaryon Square in Nablus, and Gezi Park in Istanbul. We have probed the notion of friendship, scrutinized the paradigm shifts from reproduction to production, explored the tension between top-down and bottom-up heritage. We have enjoyed the potential of biological commons and have looked into the different tempi and temporalities of commoning and heritage works. The seminar series has originated and evolved along the path we set up for the Urban Heritage Research Cluster in the start: “the city as an interface of different temporalities – i.e. past events, dreams for the future and contemporary constraints – and heritage as intermingled in many different urban realities and entangled in issues of aesthetics, ethics, space and power…”."