It is the five Swedish metropolitan cities Karlstad, Linköping, Norrköping, Västerås and Örebro that will now market each other. The theme has been named "24 hours at the neighbor".

- Some may think of us as competitors. But in fact, we are colleagues who all share the same interest, namely to increase tourism in our part of Sweden and our type of destinations, says Christina Leinonen, business development visitor at Norrköping Municipality in a press release.

The hope is that the campaign will attract visitors to stay overnight, which would be a support to the hard-hit hotel industry. The campaign will start in June.