How do idealistic projects for shaping the world relate to the actual political organization of world politics? The contributors to this volume provide a fresh perspective on the formation of order in world politics. They develop and utilize the concept of ›Worldmaking Projects‹ (WMPs). These are projects that throughout history have sought to advance specific visions of order, such as national, imperial, or international. A particular emphasis is put on the central, yet often overlooked role that infrastructures play in this regard. The nexus between infrastructures and worldmaking is explored in relation to different Worldmaking Projects, including those in the air and in space, as well as in the polar regions.