Abstract: A modular element or a so-called edging stone for forming a lawn or flowerbed border, consisting of a lower part 1, 51, which forms a continuous channel 11 for receiving a hose and/or cable, and a lid 3, 53 that is attached in a snap-on or hinged fashion to the lower part, which when the modular element is embedded so as to be flush with the surface forms a flat top that can be walked on or driven on. The lid and lower part are concavely curved on one end and convexly with the same radius on the other end, so that contiguous modular elements can be laid down at a desired angle to one another without forming a gap, in order to form curved lawn or flowerbed borders. Within the modular element, built-in parts or connectors can be arranged, such as for example a luminous element 73, an electrical socket 85, or a water-hose hook-up 81, 82.