Today, the canal is known as the 'Llangollen Canal'.
The canal was intended to provide a route from coalfields and ironworks near Wrexham to the sea. From Nantwich, canal traffic took the Chester Canal (now part of the Shropshire Union Canal) to Chester where - at least, initially - sea access via the River Dee was possible. However, a northern canal extension was added later, linking Chester with the River Mersey at a place now known as Ellesmere Port.
The canal's most notable features include the spectacular Pontcysyllte Aqueduct, engineered by Telford to carry the canal over the River Dee.