The Llangollen Canal is one of the most beautiful and most popular canals in Britain and takes in the Thomas Telford's famous Aqueduct.
Alongside the canal runs a footpath from which you can enjoy the stunning scenery from the foot of Castle Dinas Bran along to the Horseshoe Falls, where you can relax, unwind, and take a dip. You can download a handy map here.
You can also enjoy the canal in a horse-drawn boat trips from Llangollen Wharf.
Don't forget to visit the nearby Pontcysyllte Aqueduct - the longest and highest aqueduct in Britain. It was built by Thomas Telford, and is a UNESCO World Heritage Site. It was completed in 1805 and is a Grade I listed building. You can also get there via the canal itself. There's also a thriving community of otters there.