Apparatus for additively manufacturing three-dimensional objects

Apparatus for additively manufacturing three-dimensional objects (2) by means of successive layerwise selective irradiation and consolidation of layers of a build material (3) which can be consolidated by means of an energy source, wherein the apparatus (1) comprises an application unit (6) adapted to apply build material (3) on at least one carrying element (9) adapted to carry build material (3) applied onto the carrying element (9), characterized in that the irradiation device (4) is adapted to at least partially consolidate at least one part of at least one wall element (20, 21) and/or in that a wall building unit (17) is provided that is adapted to build at least one wall element (20, 21) delimiting a build material volume (22) carried by the carrying element (9a), wherein a first wall building element (18) and a second wall building element (19) are provided, wherein the first wall building element (18) and the second wall building element (19) are at least partially arranged next to a build material volume (22) carried by the carrying element (9), in particular in portal-shape.