The second stop of the roadshow of the Oxford Handbook of Comparative Regionalism, edited by Tanja A. Börzel and Thomas Risse, takes place in Rio de Janeiro, Brazil. The KFG, Freie Universität Berlin and the Pontifical Catholic University of Rio de Janeiro jointly organize a two-day workshop on “Comparative Regionalism: State of the Art and the Road Ahead”. The workshop involves four panels and two roundtable discussions with scholars from across the world on selected chapters from the new handbook.