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
Ellesmere Canal three-lock arrangement. At this point, the section is now part of the Shropshire Union Canal. This section was added to link the canal to the national network. It became the Ellesmere Branch of the Shropshire Union Canal and is now part of the Llangollen Canal. This was the principal part of the original main line of the canal. It became the Llangollen Branch of the Shropshire Union Canal and is now part of the Llangollen Canal. This section of the canal was added as a navigable feeder. It is now part of the Llangollen Canal. This section (the Llanymynech Branch)