Body and space—each is inconceivable without the other. But how does their relationship change when viewed from an architectonic, philosophical or artistic perspective? Performativ? presents the positions of key international figures, revealing insights into their creative artistic and scientific approaches. The contributors are concerned to shape physical reactions, for example, to construct volumes or examine bodies in a state of experience. The dynamic concept of reality behind these diverse starting points is shown clearly in the artworks of Thomas Bayrles, the architectonic projects of Philippe Rahm or the philosophical discourse of Heinz Paetzold. The introductory essay offers a trans-disciplinary survey; a final discussion among the contributors pinpoints productive interfaces between architecture and art.