A wall panel may have a rigid layer, a first insulation layer made from a two-part rigid urethane pour foam, and a second insulation layer made from a phase change material. The first insulation layer may be chemically bonded to the rigid layer and may also be bonded to the phase change layer. The first insulation layer may be positioned between the second insulation layer and the rigid layer. The rigid layer may be a finished surface or a veneer layer may be applied to the rigid layer.