The German Youtuber Matthias Schwarzer has made this video of his road trip around Vättern and everything is true. The following text is copied from Visit Småland – “Lake Vättern is Sweden’s deepest and second largest lake. This long body of water is bordered at its south end by Småland on both sides. It boasts beautiful beaches for bathing, steep banks and magnificent viewpoints. There are also lots of exciting places to visit along the lake and in the surrounding hilly countryside.”