Less known places of interest to see in Sheffield and surrounding areas

Ey up all.

I'm a Sheffield lad who has moved back from Prague after many years, and I'm looking for some interesting places that aren't as well known and have a bit of history or are a little unusual. I was wondering if we could put together a list of places that are off the beaten track.

I'm not looking for attractions like the Winter Gardens, but rather places like the area where George Orwell lived while writing The Road to Wigan Pier.

Thanks in advance. I'm looking forward to seeing what everyone comes up with!