The museum was marvellous. But as we cruised across the beautiful harbour - ferry fare included along with museum admission, in our Oslo Pass - I couldn't help musing about why hotel lighting is almost always awful.
I know that for many travellers hotels are mainly thought of as places for sleeping and related activities where dim lighting is preferable. But even young honeymooners will surely take a break now and again to see things like the three amazingly well-preserved Viking ships 1100-1200 years old that we marvelled at. Or even to read a book. And when that happens good lighting is often useful.
For all the advantages of looking at Google Maps on a smartphone, it's sometimes still easier to plot a route on a large printed map.
Plus, I'm sure I'm not the only veteran traveller who finds it easier to look for information in a printed guide book such as the excellent one provided with the Oslo Pass.
But it wasn't just the Oslo hotel we stayed in that left us in the dark. During a trip which embraced England, Scotland, Norway, Denmark and Sweden, only The Lamb Inn in the English seaside town of Eastbourne had lights that actually lit the room.
So why have hotel designers decided that dim background lighting is the way to go? Couldn't they give those who are old or old-fashioned, or both, at least the option of turning on a nice bright lamp? Surely that wouldn't cost a fortune.
After all, though I may have solved my map-reading problem by getting out a torch, that option isn't available if you've only just arrived and are squinting to try and read the numbers on the combination lock on your suitcase.
Jim Eagles is a former editor of Herald Travel.