Llangollen Canal Walk, Denbighshire

The UK’s highest navigable aqueduct, it’s a World Heritage site and among Thomas Telford’s greatest legacies.

The walk starts at Horseshoe Falls, a Telford designed weir, which feeds water into the canal from the River Dee, and ends at the picture postcard town of Llangollen.

Must sees include the pump-house between the river and canal – still operational today – and Pentre Fellin, once an important slate mining operation whose buildings now house a motor museum. The beautiful landscape makes it hard to imagine the days when coal and limestone travelled up and down the canal by barge.

Julia’s verdict: Hit the heights and see the sites!