Borders are deeply rooted entities. Even when borders apply to conflict elsewhere, they can affect us personally and concern us on a daily basis. Boundaries are linked to our formation of identity, contain an everyday complexity, and are anything but superficial - a border can be unfolded thoroughly. Borders appear in different forms in this issue: the authors approach the theme in a theoretical way, or, instead, from a very personal experience. Within different worlds, we question them from a distance or, on the contrary, from the inside. We want to understand what a border does, where it lies and how it came to be.