A museum opens in Stockholm on Tuesday to show off band paraphernalia, including the helicopter featured on the cover of their "Arrival" album, a star-shaped guitar and dozens of glitzy costumes the Swedish band wore at the height of its 1970s fame.
But some gear is definitely not on show. Band member Bjorn Ulveaus says certain items are "forever lost," conceding only that they are "embarrassing" tight costumes he wore when he was "slightly overweight." He declined to say more.
Some 40 sets of the trademark shiny flares, platform boots and knitted hats are on display. Visitors can try on costumes, record music videos and sing such hits as "Dancing Queen" and "Mamma Mia" in a studio.