is a neighbourhood and former village in Toronto, Ontario, Canada, west of downtown. The neighbourhood is bounded on the west by Roncesvalles Avenue, on the north by the CP Rail line where it crosses Queen Street and Dundas Street. It is bounded on the east by Dufferin Street from Queen Street south, and on the south by Lake Ontario. Parkdale was founded as an independent settlement within York County in the 1850s. It was incorporated as a village in 1879 and amalgamated with Toronto in 1889. It was an upper-income residential area for the first half of the 20th century, with several notable mansions. The area changed dramatically with the building of the Gardiner Expressway in 1955, which resulted in the demolition of the southern section of the neighbourhood and the Sunnyside Amusement Park, and the creation of a barrier between the neighbourhood and the north shore of Lake Ontario.