A wall attachment device for securing a handrail to a supporting wall, the handrail having a first end and a second end, at least one of the first and second ends being hollow and including an inner connecting member extending radially inwardly within the corresponding end, the device comprising: a body sized and shaped to be received in the corresponding end, the body including a planar rear face adapted to be positioned against the supporting wall, a front face opposite the rear face and a lateral face, the body further having at least one fastener opening to receive a fastener for securing the body to the supporting wall; and an outer connecting member extending radially outwardly from the lateral face for securely engaging the inner connecting member of the handrail to thereby attach the corresponding one of the first and second ends of the handrail to the supporting wall.