On this day in history : 26th November 1805 – The official opening of Thomas Telford’s Pontcysyllte Aqueduct – carrying the Llangollen Canal over the valley of the River Dee at the Welsh/English border….

The 18 arched stone and cast iron structure, designed to take narrow boats, is the highest aqueduct in the World, standing at 38m above the water…. At 307m long it is the longest aqueduct in Britain; it is Grade 1 listed and a World Heritage Site….



