I've been away for a couple of weeks in Scandinavia. Considering Denmark, Sweden and Norway are close neighbours, as well as being similar to us in many ways, how ignorant I found myself of them. I knew of them as Vikings, then a long gap until they turn up in twentieth century history as neutrals or the resistance.
Since Brits mainly holiday in warmer and cheaper places than their own they tend to know more about France or Italy than the other Germanic language speakers.
Impressions - very clean, very efficient, and museums with good and imaginative displays. Everyone speaking English, and friendly and helpful if you asked for directions. Drinking expensive. Norway very expensive (though you can get great deals on trains if you book well ahead), Sweden and Denmark less so.
Kalmar Castle, on the eastern side of Sweden, is splendid. Beautifully placed on its promontory, historically important, and with some beautiful rooms.