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Pontcysyllte Aqueduct - Monument
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Pontcysyllte Aqueduct

description Pontcysyllte Aqueduct Overview

The Pontcysyllte Aqueduct spans the Vale of Llangymdyfarfa in North Wales. Constructed between 1799 and 1801 by Thomas Telford, it’s a remarkable feat of engineering transporting the Grand Canal across the River Dee and surrounding valleys. The structure utilizes cast iron to support a series of arches, demonstrating early industrial innovation. It is now designated as a UNESCO World Heritage Site and attracts visitors interested in canal history, architectural design, and Welsh heritage.

help Pontcysyllte Aqueduct FAQ

Who built the Pontcysyllte Aqueduct?

The Pontcysyllte Aqueduct was designed by the civil engineers Thomas Telford and William Jessop and completed in 1805. It was built to carry the Llangollen Canal over the River Dee valley in northeastern Wales.

How high is the Pontcysyllte Aqueduct?

The aqueduct stands approximately 126 feet (38 meters) above the River Dee, making it the tallest and longest aqueduct in Britain. The cast iron trough that carries the canal water is about 1,007 feet (307 meters) long across 18 piers.

When did Pontcysyllte Aqueduct become a UNESCO World Heritage Site?

The Pontcysyllte Aqueduct and Canal were inscribed as a UNESCO World Heritage Site in 2009, recognizing their significance as a masterpiece of civil engineering from the Industrial Revolution. The designation covers the aqueduct and an 11-mile stretch of the canal.

Can you walk across the Pontcysyllte Aqueduct?

Yes, there is a narrow towpath alongside the canal trough that pedestrians can walk across, though there is no railing on the canal side and the drop is approximately 126 feet. Narrowboats also regularly cross the aqueduct, carrying passengers through the cast iron trough.

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