Hiking routes in and around Gothenburg
If you're free on a sunny day, take bus 90 from Brunnsparken to Sikgatan stop (30min ride). Walk a bit and up the hill....for a STUNNING view of the southern archipelago.
You can have a picnic there.
There's also an ancient grave on the hill dating back to the bronze age ( Protected content )!
Here's a map. The hill is the round green area