Will P.
Yelp
Along Bristol's harbourside you shall find this link to Bristol's past. Trundling up and down the railway lines ingrained into the ground a steam train runs, pulling along cart loads of tourists. It's quite an evocative experience - I can remember well the smell of the fire burning and the piercing whistle just before the train juddered into life.
Something I did whenever the sun came out when I was young, this is a wonderful family day out. Get a kid to buy themselves a ticket, help them up into the carriage (things have been kept pretty authentic here, so you might have to clamber around a bit, and they should have a whale of a time.
The train billows huge amounts of steam,which means you can see from all over the city when it's running. More often in the summer months, make sure you take the opportunity to go for a ride when you can.