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. Slough and Salt Hill became locations for the second stage to change horses on the journey out from London. Coaching inns, such as the Crown in Slough, and the Windmill and Castle (Botham's) inns in Salt Hill, grew up along the Great West Road to service the traffic between London and the West. Neither of those survive, although the Red Cow (Upton) and the Three Tuns (Salt Hill) still exist as pubs.