It should open by 2008.
ABBA's sold more than 370 million albums to date and still manages to sell 3 million a year.
The city of Stockholm's betting the museum will draw a few of those fans, perhaps as many as 500,000 a year.
Band members plan to donate the exhibits, but they won't be involved with the museum. Corporate sponsors will foot the bill.
The museum is going to have one special feature: a studio where fans can record their own version of ABBA hits.
So in that spirit, here's our Marketplace choral tribute to ABBA.
[ Marketplace staff singing along ]
Ah well, the cover is seldom as good as the original.