Abstract: Signage structure for attachment an advertising or other display to an existing water tower or other vertical architectural structure. The signage has a support frame including mounting elements attachable to vertical tower supports of the water tower. The mounting elements include an upper mounting element having a first length and a lower mounting element having a second length that is less than the first length. The electronic display is supported on the support frame in a portrait configuration, and the electronic display is disposed at an angle to vertical upon attachment to the architectural structure due to the first length of the upper mounting element and the second length of the lower connection.