Abstract: A structure comprising at least three essentially rigid legs, each having a top end, and a bottom end, with at least two connecting elements fitted on each leg and at least three elongate braces each having a first end and a second end and being fitted with at least four anchoring sites. Each brace is connected with two adjacent legs, and at least one of the anchoring sites is directly coupled with a respective connecting element of one adjacent leg, and at least one other of the anchoring sites is coupled via a tensioning member to another respective connecting element of the other adjacent leg.