Abstract: A modular display system is disclosed which exhibits wall elements having vertical interior profiles arranged in the lateral corner regions. The vertical profiles are connectable among themselves by horizontally oriented profiles, and the face side of which exhibits a covering. In order to render such a system particularlly versatile for demounting and use, it is provided according to the invention that the vertical profiles exhibit, in addition to a first contact surface oriented at right angles to the extension of the wall element for the horizontal profiles, a second contact surface oriented in the direction of extension of the wall element for accommodating connection of identical profiles oriented transversely to the latter. Exterior formally rigid covering parts are attachable to the profiles oriented in the direction of extension of the wall element. The vertical profiles exhibit outwards adjacently to the second contact surface a housing channel oriented in the direction of extension of the profile.