Llangollen Canal season. Its origins as parts of two separate canals can be seen from the fact that the bridges are numbered from 1 at Hurleston to 70 at Rowsons Bridge, just past Frankton Junction. Continuing along the route to Llangollen, bridge numbering restarts at 1, while bridges 71 and upwards continue along what is now the Montgomery Canal, but was formerly the Ellesmere Branch to Llanymynech, where it joined the Montgomeryshire Canal. A notable feature of the canal is the Pontcysyllte Aqueduct, built by Thomas Telford. Opened in 1805, the aqueduct is more than long and above the valley floor. It
Llangollen flow. The bridge was also widened in 1873 and again in 1968, using masonry which blended in with the older structure. It is a Grade I listed structure and a Scheduled Ancient Monument. On the outskirts of the town is Plas Newydd ("New Mansion" or "New Place"), from 1780 the home of the Ladies of Llangollen, the Honourable Sarah Ponsonby, Lady Eleanor Butler and their maid Mary Caryll. The Pillar of Eliseg is another old monument. There is an electoral ward of the same name. This ward includes Llantysilio community and has a total population taken at the 2011 census