Roman Amphitheatre

The Roman Amphitheatre near Blaenau Ffestiniog is one of those archaeological sites that stops you mid-walk. You're out in Gwynedd's slate-grey moorland, and suddenly there's this sunken oval arena, grass-grown now, where Roman soldiers once gathered. It's not vast - nothing like the Colosseum - but that's rather the point. This is genuine military archaeology, raw and understated.

What you're looking at is a parade ground and training space from a Roman fort, built around 78 AD when the legions needed to keep order in this corner of Wales. The dimensions are still clear enough if you walk the perimeter. There's a proper sense of standing where centurions watched recruits drill, where dust rose under sandalled feet.

This one's for walkers and history types rather than families seeking a day out - there's no visitor centre, no café, just the site itself and whatever story you bring to it. Allow an hour to explore properly, longer if you're the kind to sit and think about Roman legions in the Welsh rain.

It's free, as far as anyone can tell, and worth timing with a stay at one of the nearby parks. Llechwedd Glamping at Plas Weunydd (5.2 miles) or Barcdy Caravan & Camping Park (5.5 miles) both give you a solid base for exploring this corner of Snowdonia. Come in dry weather. The amphitheatre's best understood with clear sightlines.