An information display device attachable to a structure includes a plate-like body, a display panel, and a surface member. The plate-like body is a part of the structure and has a first attaching surface, a second attaching surface opposite to the first attaching surface, and a side portion that connects the first attaching surface and the second attaching surface to each other. The display panel is attached to the plate-like body and displays information on the display surface. The display surface is disposed from the first attaching surface to the second attaching surface of the plate-like body. The surface member is disposed on the display surface side of the display panel to cover the display panel and is in a state where only the information displayed on the display surface of the display panel is visible through the surface member when the display panel is turned on.