I wasn't sure whether to add this as an 'off the beaten path tip' or not. But while I was in Goteborg I did come down to Helsingborg and (*very* briefly) to Helsingfor in Denmark.
My friend Henrik had arranged for us to go down to Helsingborg to see a football match between Helsingborg and IFK Goteborg (see my sports tip for more information). Afterwards we went on the quick, but beautiful, ferry trip over to Helsingor and back.
The harbours of Helsingborg and Helsingor are stunning at sunest, with the orange sky and twinkling lights of each city.
Plus there is also the bonus of being able to shop duty free (chocolates, alcohol) whilst onboard the ferry.
So if you do go down to Helsingborg, take a little sunset trip on the ferry, you won't be disappointed.