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 appeal against closure, and gave the first hints that such canals could be retained because of their social value for recreation. Hugh McKnight, the editor of the Inland Waterways Association's "Bulletin", wrote an optimistic report in 1966, pointing to the achievements of the first 20 years of the organisation's existence, mentioning the changes in public opinion concerning the canals, and pointing particularly to the growth in leisure use on the Llangollen Canal and the Oxford Canal. Official attitudes changed, and the provisions of the Transport Act 1968 placed the canals under the control of the British Waterways Board, who were