sentences:  On the Ashton Canal the Store Street Aqueduct designed by Benjamin Outram, is believed to be the first skewed aqueduct of its kind and the oldest still in use and a brick lock-keeper's cottage constructed about 1800 survives by Number 2 Lock.The canals shaped the layout of the city attracting wharves and warehouses, transporting coal and heavy materials and provided water to run steam-engines.Large cotton mill complexes survive on the fringes of the city centre, Murrays Mills, the McConnel & Kennedy Mills and Beehive Mill at Ancoats were built from the 1790s.