The relief is a form of the visual arts situated between painting and sculpture - a hybrid between two- and threedimensional expression that emancipates itself from the surface even as it remains confined to the same. The publication will explore the various manifestations of the relief over a span of more than a century and a half, from 1800 until into the 1960s, during which the medium took on ever greater importance for artists and theorists alike. Whereas in the nineteenth century classical methods of three-dimensional composition and sculptural invention still dominated the production of reliefs, the spectrum broadened in the twentieth to encompass widely differing materials, techniques, and their combinations. The 'construction' of reliefs in the form of collages and assemblages became an outlet for a new conception of space that was not averse to penetrating-or even dissolving-the support surfaces. Artists such as Berthel Thorvaldsen, Paul Gauguin, August Rodin, Henri Matisse, Alexander Archipenko, Pablo Picasso, Sophie Taeuber-Arp, or Gerhard Richter and their works are presented.