Abstract: The invention relates to a building element for constructing a play apparatus, comprising a support element and at least two connectors connected to the support element for releasable coupling to other support elements. The invention also relates to a connector for use in such a building element. The invention further relates to a fall-absorbing base provided with at least one connector for coupling to such a building element. The invention further relates to an assembly of a fall-absorbing base and such a building element. In addition, the invention relates to a kit of parts for constructing a play apparatus, comprising at least one such building element.