sentences:  The surrounding area to the north of Chalvey and the Great West Road is also known as Salt Hill and includes Salt Hill Park.Salt Hill Park once boasted great iron gates, which were subsequently smelted as part of the war effort during World War II.From the mid-17th century, stagecoaches began to pass through Slough, and a 1727 Act of Parliament established the Colnbrook Turnpike Trust to manage the Great West road from Cranford Bridge to Maidenhead Bridge.