Toronto in 1876
This is hands down one of the coolest maps of Toronto ever made. A fellow by the name of P.A. Gross drew it in 1876 after having walked around the city block by block, sketching every single building, road, laneway and alley between Fort York and the Don River, from the lake right up to the Davenport escarpment. The detail is mind-blowingly incredible, so you're not going to want to just look at the small image above, you're going to want to see the fully zoomable version over here. It's amazing.