Arsenic Works

Stone foundations and grassy mounds mark what remains of Cornwall's industrial past at this atmospheric archaeological site near Truro. The Arsenic Works represent a darker chapter in mining history - this was where the deadly white powder was extracted from tin ore during the 19th century. Walking among the ruins, you can still trace the outlines of calcining furnaces and settling chambers where workers once processed one of the world's most poisonous substances.

History enthusiasts will find plenty to ponder here, though don't expect polished interpretation boards or visitor facilities. This is industrial archaeology in the raw, where weathered stonework tells its own story. The site's remote feel adds to its haunting atmosphere - it's easy to imagine the smoke and danger that once filled this valley.

Families with older children who enjoy exploring ruins will get something from a visit, but younger ones might find it all a bit abstract. Allow an hour to wander the remains and soak up the history. The lack of clear opening times suggests it's accessible year-round, though winter visits can be muddy.

If you're staying at nearby Carnon Downs Caravan and Motorhome Club Campsite or Trevarth Holiday Park, it makes for an interesting historical detour. Combine it with a trip into Truro for a proper day out exploring Cornwall's mining heritage.