Pontcysyllte Aqueduct - has been named as the most captivating UNESCO World Heritage Site in the world.
UNESCO status is given to landmarks or areas that have a major cultural, historical, or scientific form of significance (like the Taj Mahal).
Taking the Llangollen Canal across the River Dee valley in North Wales, the aqueduct took ten years to complete and is a fine example of the incredible feats of engineering you can find on our canal network.
The bridge is 336 yd (307 m) long, 12 ft (3.7 m) wide and 5 ft 3 in (1.60 m) deep.[8] It consists of a cast iron trough supported 126 ft (38 m) above the river on iron arched ribs carried on eighteen hollow masonry piers (pillars). Each of the 18 spans is 53 ft (16 m) wide