If you are an Abba fan then this must be on your list of places to visit in Stockholm. We were able to purchase our tickets on line and choose a time to visit. We walked from the city and must say that the museum wasn't that easy to find as there were no signposts for it as there were for the Vasa museum. However, once there we exchanged our online code for tickets and as we were early went in search of coffee and a toilet, this was a bit of a problem as in order to access these facilities you had to enter the museum itself which you couldn't do until the time of your ticket.
Once inside the museum the set up was very good with background info on the band members and opportunities for photos "with" them. There were several interacitve activities too which didn't involve queueing for long because the number of people is carefully controlled with the time ticket. After the visit you can download your singing with the holographic band but this was a disappointing 30 seconds when the actual activity must have been a couple of minutes. Also, the song recording isn't downloadable as you just get a score.
On exiting the museum we decided to get the ferry back which turned out to be round the corner and literally a 5 minute walk past some cafes which we wished we had known about earlier!
The length of time needed is around 1.5 hours.
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