Stopped off for 18 hours on the way from Helsinki to Oulu, tg we didn't plan on longer....
Let me begin by saying that the Puijo Tower is great, but it is a 2km slog, mostly up hill, from the centre of town, so I advise taking a taxi unless you are fit. It is also TERRIBLY signposted, luckily we found a couple fo lads who put us on the right track. The views from the top are awesome, and there is a cafe at the top so you can have a coffee and look at the views. Because our hotel had advised 'it's a 20 minute walk from here' (actually took 50) I only had 20 minutes at the top before it closed, which was not long enough - and very annoying.
After walking back into town, the restaurant we had been recommended was closed.
On the Saturday morning we wanted to visit the Orthodox Church Museum, described in the Rough Guide as 'the best museum in Finland' - it was closed. Pouring with rain, so we walked into the centre of town hoping to buy some of the local meat / fish pie delicacy - only 3 market stalls open, none would sell me a small piece to sample, I could only buy a whole pie at 20+ euros, so that idea went out of the window.
The central market square is undergoing massive reconstruction, nothing to see there so after a cup of coffee we headed for the VB photographic museum - which was closed !!!
Shrugged our shoulders and and walked to the station to wait for our train. I am sure it is possible to have a good time in Kuopio (the Rough Guide recommends a stop there on the way north) but sadly, unlike our visits elsewhere in Finland, we didn't.