Llangollen Canal has 19 stone arches, each with a 45-foot (14 metre) span. Another aqueduct carries the canal over the River Ceiriog at Chirk, and there are tunnels nearby at Whitehouses, Chirk, and Ellesmere. The canal also forms the boundary on two sides of the Fenn's, Whixall and Bettisfield Mosses National Nature Reserve. In 2009 an eleven-mile section of the canal from Gledrid Bridge near Rhoswiel through to the Horseshoe Falls, which includes Chirk Aqueduct and Pontcysyllte Aqueduct, was declared a World Heritage site by UNESCO. The canal at Hurleston Junction rises from the Shropshire Union Canal main line, through four adjacent
Llangollen Canal 'waterways to be retained', and finally of 'waterways having insufficient commercial prospects to justify their retention for navigation'. The Llangollen Canal was placed in the latter category, since it was still officially disused. This was followed in 1958 by the Bowes Report, which suggested that the first two categories should be classified as Class A and Class B waterways, with Class B waterways put back into good working order and retained for 25 years, to attract private investment. The Llangollen Canal was still in the final category, but the report at least suggested that there should be a right of