The Bothnian Arc is a cross-border area on the border of Finland and Sweden that covers the most populated areas along the upper Bothnian Bay, spanning 800 kilometres. It has a population of around 710 000, across 55 000 km² with an economic output of USD 31 billion. The Bothnian Arc collaboration was initiated by local authorities, with strong commitment of the mayors of the cities of Oulu and Luleå (300 kilometres apart). Despite a peripheral location in all respects, some parts of the Bothnian Arc have shown a remarkable vitality, notably Oulu (Finland), driven by an innovation ecosystem that builds on the heritage of Nokia and the contribution of Oulu University. Luleå (Sweden) has recently attracted the European Facebook data centre. The area is looking to go beyond ad hoc projects for a more strategic approach to innovation-driven collaboration to be the dynamic hub of the north. This case study is part of the project Regions and Innovation: Collaborating Across Borders. A summary of this working paper appears in a report of the same name.