A folding door with two or more intrinsically rigid folding shutter elements with alternating noncollapsing and collapsing element edges, with at least one guide means which can be raised and lowered on or in one or more guide rail(s), for moving a, in particular the lower, permanently guide rail-adjacent, noncollapsing door element edge, wherein at least one release movement means, which is provided for the initial release movement of the permanently guide rail-adjacent door element edge from the guide rail(s), at the beginning of the opening of the folding door, and for the final advance movement of the permanently guide rail-adjacent door element edge at the end of the closing of the folding door, and an actuation device and method for the same.