The German-American philosopher Hannah Arendt (1906-1975) once stated that spatial thinking is political thinking, as it is concerned about the world and its inhabitants. We certainly can understand spatial thinking here as architectural thinking: the "world" for Arendt meant the ways in which we make the globe habitable for people: how we build houses and cities, infrastructures and other networks, and furnish spaces with tables, chairs, paintings and photographs. According to Arendt, this world-of-things was crucial for political life: it is this world that simultaneously connects people and separates them, just like a table organises the people (and the conversation) around it. This OASE examines architecture - design, building, built environment - from this perspective. The issue opens with an introduction to Arendts political thinking, and how it is connected to the (production of) the world. Next, a variety of architects, including George Baird, Patrick Bouchain, Pier Vittorio Aureli, and Mary Duggan, will have the floor to examine their daily practice from Arendts perspective.