The lakefront was developed by the Toronto Harbour Commission in the 1910s, leading to the development of the Sunnyside Beach and Amusement Park in 1922. Its popularity spurred development of the area commercially. The foot of Roncesvalles became a commercial and transportation hub, with a train station, a bus depot and the streetcar loop. The Park was demolished for the Gardiner Expressway project in 1955 and the Sunnyside intersection bypassed, leading to a decline in commerce and residential values in the area. The wealthy moved away from the area to newer suburbs further west and many large local homes were divided into apartments. However, Roncesvalles has remained largely middle class, attracting an influx of successful immigrants especially from Poland reversing the relationship between Roncesvalles and Parkdale. St Casimir's Catholic Parish was established in 1944. The construction of the church and church hall began in 1948 and was completed in 1954 by which time the Polish community had become well established in the area. It was the construction of the church that attracted the Polish immigrants to the immediate area.