Hej!
Today we have a quite interesting question from Jack:
I’m wondering why when you arrive by train into Stockholm main station the signs read “Stockholm Central”. But when using the South or North stations a mysterious extra ‘-s’ appears “Stockholms Södra / Stockholms Norra”
Actually it’s the “Stockholm Central” without a -s that is more mysterious if you look into grammar rules. You see, in Swedish we use -s for genitive just like you do in English. The only difference is that there is no apostrophe in Swedish. Here’s an example:
Swedish
Saras cykel är röd.
English
Sara’s bike is red.
The funny (and perhaps confusing) part is that in Swedish there’s and old rule that says you shouldn’t use the genitive -s after names of places ending with a vowel. So we have to say:
Uppsala universitet
Umeå universitet
Örebro universitet
but according to the rule we have to say:
Lunds universitet
Göteborgs universitet
Stockholms universitet
According to this rule the train station signs without the -s are more mysterious than the ones with -s 
However, we all know that languages always change and it happens that the genitive -s is dropped also when the place name ends with a consonant. Why? I have no idea to be honest 
