The Dalziel Barn is an architecturally distinctive log barn built in 1809 and situated in Vaughan just north of Toronto's Black Creek Pioneer Village. Among its features, the barn had a large gable roof with a double slope on one side. Two gable roofed cupolas sat on the ridge. Although the windows and cupolas are often thought of as extraneous decorative features, they served to ventilate and provide natural lighting to the barn interior. The upper floor cantilevers out, creating an overshoot.