A decorative structure in the form of a tree for attaching decorative material, comprising a central support, side supports and arms, wherein - the decorative structure comprises 80% or more by weight of wood material, - fastening elements are arranged in the central support for fastening the side supports, and in the ready-for-use state of the decorative structure, a longitudinal axis of the central support is arranged essentially in the direction of gravity, and, - in the ready-for-use state of the decorative structure, the side supports are fastened to the central support in a rotationally fixed and detachable manner by in each case one of the fastening elements of the central support and are arranged so as to project laterally from the longitudinal axis of the central support, - in the ready-for-use state of the decorative structure, the arms are fastened to the side supports and are arranged projecting laterally from the respective side support, - the fastening elements comprise recesses in the central support in the form of circular bores for the side supports, - the fastening elements comprise anti-rotation elements in the form of anti-rotation pins, - an end of the side support facing the central support features a flattening which increases towards the end of the side support so that a kind of truncated wedge shape is formed, - the central support features an anti-rotation pin bore, spatially arranged such that an anti-rotation pin located in the anti-rotation pin bore partially projects into the circular bore for the side support, and - in the ready-for-use state, the part of the anti-rotation pin projecting into the circular bore for the side supports is in frictional contact with the flattening of the side support. - the decorative structure comprises 80% or more by weight of wood material, - fastening elements are arranged in the central support for fastening the side supports, and in the ready-for-use state of the decorative structure, a longitudinal axis of the central support is arranged essentially in the direction of gravity, and, - in the ready-for-use state of the decorative structure, the side supports are fastened to the central support in a rotationally fixed and detachable manner by in each case one of the fastening elements of the central support and are arranged so as to project laterally from the longitudinal axis of the central support, - in the ready-for-use state of the decorative structure, the arms are fastened to the side supports and are arranged projecting laterally from the respective side support, - the fastening elements comprise recesses in the central support in the form of circular bores for the side supports, - the fastening elements comprise anti-rotation elements in the form of anti-rotation pins, - an end of the side support facing the central support features a flattening which increases towards the end of the side support so that a kind of truncated wedge shape is formed, - the central support features an anti-rotation pin bore, spatially arranged such that an anti-rotation pin located in the anti-rotation pin bore partially projects into the circular bore for the side support, and - in the ready-for-use state, the part of the anti-rotation pin projecting into the circular bore for the side supports is in frictional contact with the flattening of the side support.