If your trip to Ostermalm is all organized but your itinerary is a bit on the empty side, let us give you a helping hand.Best things to see and do around the neighborhood? National Museum and Royal Swedish Opera are right up there. Head on over and find out what the fuss is about.There are lots of attractions within walking distance of the center of this neighborhood, such as ABBA The Museum. Gröna Lund and Vartahamnen are two other nearby attractions that lure lots of travelers like yourself.