Taking a walk along Katarinavagen offers some of the best views in all of Stockholm.
Start the walk right by the McDonald's near Slussen and follow the curved road all the way up to the top of Sodermalm! From there you have a great view of Old Town, Skeppsholmen and Djurgarden.
You also have the option to combine scenic Fjallgatan, Nytorget, and Gotgatan into your walk as well...the choices are limitless! (and will take you a couple of hours if you do it all.)
Startpoint is an approx 20 Minute walk from Central Station or 7 minutes by public transport