A system and method of mapping and/or projecting images onto a three-dimensional architecture. In one aspect, the invention a method of mapping and/or projecting imagery onto a three-dimensional architecture comprising: a) identifying a projection location from which a line of sight exists to one or more desired surfaces of the architecture; b) securing a projection device in a fixed orientation in the projection location; c) operably coupling the projection device to a computer device, the computer device comprising a video compositing application; d) opening a composition window of the video compositing application, the composition window being displayed on a display module; e) projecting content of the composition window onto the architecture; f) inserting a matte into the composition window, an image of the matte being projected onto the architecture; and g) adjusting the size, shape, position, orientation, or any combination thereof of the matte within the composition window until edges of the projected image of the matte become aligned with edges of one of the desired surfaces of the architecture.