Due to the fact that the city’s big and hyped museums tend to get busy and touristy, I suggest a visit to the smaller, more hidden and niche ones in Stockholm is more fun. Spårvägsmuseet (Railway Museum) contains historical Swedish transportation vehicles, and is definitely one of those small enough museums to like.
The museum opened for the public in 1944, changing location over time. In the last two decades it’s moved to a more quiet area of Södermalm though, and today a toy museum is an interesting feature to the museum as well.
One things I’ve always loved about Spårvägsmuseet is the timelessness you encounter. I always get the impression that time moves slower in here than in the world outside, and it’s not only the objects but the whole atmosphere that creates that feeling.
Usually it’s not teeming with people in here, although you should avoid holidays. The entrance fee is also cheap compared to other museums in Stockholm – and students pay half price.