This publication is a collection of the papers and opinions that several people closely linked to the internationalization of Barcelona, ??from mayors and councilors to technicians and advisers of the City Council, offered during the seminar “40 years of international politics of Barcelona ”, organized by the Fundació Catalunya Europa, which took place on Thursday 31 May 2018 at the headquarters of United Cities and Local Governments in Barcelona.

The publication aims to reflect the fruits of the debates that took place during the seminar, and which had a dual purpose. First of all, to review the various strategies and actions in international politics of Barcelona City Council over the last 40 years, sharing experiences and reflections with the main people responsible for each stage of government at the head of the council. Second, draw conclusions and learnings that help reinforce current strategies.