Llyn Clywedog

The reservoir sits like a long mirror between the Powys hills, about twenty minutes from Llanidloes. Llyn Clywedog is a proper working water supply, not just a scenic curiosity, and that's part of what makes it worth stopping for. Walk the perimeter path and you'll get decent views across the water to forested slopes - it's the kind of landscape that makes you remember why you came to Mid Wales in the first place, all quiet and a bit moody depending on the weather.

It works well for walkers wanting something straightforward without committing to a full day on the hills. Most people spend an hour or two here, either doing the full circuit or just wandering one side. The walk is easy enough for families with kids who don't mind a bit of tramping, though there's not much to actually do once you're there beyond looking and breathing. No café, no visitor centre, no interpretation boards - it's just you and the water.

If you're based at one of the nearby sites - Red Kite Touring Park is closest at under two miles, or Clywedog Riverside if you want the name to match - this makes a good morning walk before heading elsewhere. It pairs well with the Llanidloes area itself if you fancy a market town poke around. Free to visit, accessible year-round, though winter can be wet and slightly grim. Go on a clearer day if you can.