Tips for Sweden and Denmark?

I will be traveling to Europe for 10 days early this fall.... I have never been to Sweden or Denmark and am looking for any good suggesions!

Thanks so much!

[European Sojourner]

I spent half month to travel around Scandinavia when I was studied in a Denmark university 2 years ago. It's a good way to open your mind as well as to meet people. Here's one article, which you might be interested in:
Tourism organization of Denmark plans to make Copenhagen a target destination for single traveler: Travel alone in Copenhagen