This museum is also an attraction in the museum package. When you see this place is very close to the planetarium, you will be dragged by the way. Going into the museum to see the introduction, I found out that this is the ancient prison in Montreal, so I used a small basement next to it as a museum to introduce the historical background of the ancient prison. The entire museum is not large, leaving half an hour of visit time. The whole introduction is mainly based on text and picture wall. When getting started, the staff will also help introduce the history and architecture of the ancient prison.