You get to Gäddede by taking road 342 from Strömsund. As you get closer to Gäddede you will find a lot of great views over the mountain landscape.
You can also reach Gäddede from Lierne in Norway and from Vilhelmina via the road by Stekkenjokk. But if you are going on those roads in the winter, please check the weather forecast and the signs since the roads over the mountain passes might be closed.
In Gäddede you can find the largest snowmobile in the world. It's not much to see though.
Fun Alternatives: Get out in the wilderness and enjoy the beautiful nature insetad.