Tolgus Arsenic Works Calciner

The industrial skeleton of Tolgus still stands near Redruth, a sobering reminder of Cornwall's mining heyday when arsenic was extracted as a profitable byproduct of tin mining. What you're looking at are the remains of a calciner - essentially a massive oven where arsenic oxide was roasted out of the mineral-bearing rocks. The brick chimney and stone structures are genuinely atmospheric, especially on an overcast day when the moorland feels a bit bleak.

This isn't a visitor attraction in the traditional sense. There's no café, no gift shop, no interpretive boards. You simply turn up and walk around the ruins at your own pace. That's either brilliant or a bit underwhelming depending on what you're after. If you're genuinely interested in industrial heritage or geology, spend twenty minutes poking about the masonry and reading between the lines of what once happened here. If you want everything spelled out for you, you'll feel short-changed.

Historians and mining enthusiasts will get proper value from this. Families with young kids might find it a touch bleak - it's not a playground, more a place for curiosity than entertainment. Allow half an hour maximum, longer only if you're photographing it extensively. The site's free to explore, though parking and visitor facilities aren't guaranteed, so check before you drive out from Redruth.

If you're basing yourself at Perran View Holiday Park for a wider Cornish break, this works as a half-hour detour to break up the day. It's genuinely atmospheric but absolutely niche.