Gothenburg sites
Gothenburg is most beautiful in the summer I would think and there is plenty of things for anyone to do I assume.
There is a funfair in Gothenburg that is called Liseberg!!
for example(thought it is open from April-September I think but not everyday (not sure about that thought) you have to check the link to Liseberg!)
Then there is parks such as Slottskogen ( that has animals),then there is Tr�dg�rdsf�reningen, Botaniska and other beautiful spots.
( I would suggest thought to never walk alone even during the daytime, just to be on the safe side).