The image is a diagram that shows the history of the garrison occurred in anticipation of war with the United States. It shows the fort destroyed in the spring and summer by Americans, British began reconstruction in the autumn. 

The diagram is divided into three sections. The first section is labeled "1813" and shows the location of Lake Ontario, Toronto Bay, and Town of York. The second section is titled "You are here" and has a red arrow pointing towards the fort. The third section has a blue arrow pointing to the town of York, which is located on the right side of the map.

There is also a yellow circle with the text "You're here" in the center of the diagram. The text is written in black and is surrounded by a white border. The background of the image is white.