A nice, artistic moment.
At the bottom of the beautiful Goteplatsen Street is the lovely museum of Gothenburg. Here you can see works by Rembrant, Van Gogh, Renoir, Picasso and many other artists. Many of the rooms show Flemish sculptures and paintings, but there are also modern sculptures on offer, and photographic exhibitions. The museum is open Tuesday and Thursday 11-6, Wednesday 11-9, and Friday - Sunday 11-5. You can get there on the number 4 or 5 tram. Access is free with the Gothenburg pass, which I recommend that you buy.