Union Canal, from Edinburgh to Falkirk, West Lothian, 32 miles, one tunnel, 2 locks.
Built to a design by Hugh Baird to link Edinburgh with the Forth and Clyde Canal at Falkirk.
1818 Construction work began
Includes the impressive Slateford Aqueduct, Edinburgh, Avon Aqueduct, and Almond Aqueduct, west of Ratho as well as the only canal tunnel in Scotland.