The Ericsson Globe is Stockholm's most famous landmark and unique of its kind, the addition of SkyView opened in 2010. SkyView takes you up the outside of Ericsson Globe. You go to the top, 130 meters above sea level, in a specially designed glass dome. From the top you have a great view of Stockholm.
Before they could build SkyView, they were able to reinforce the Globe with 42 tons of steel and 70 tons of rail mounted on the outside of the globe.