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 is now operated by United Utilities, and was given a £6 million upgrade in 2003. Just beyond the A534 Wrexham Road bridge is the entrance to Swanley Bridge Marina, on the west bank of the canal. It has moorings for over 300 boats, and is situated in of farmland, which includes a wood with nature trails. It opened in September 2006, and was built in response to a document published by British Waterways in the spring of that year, which outlined development opportunities for farmers and landowners adjacent to the canal. The two Swanley locks raise the level of the