This is a really small site in the middle of Jutland that doesn't offer a whole lot to see, but is still historically interesting. It consists of 2 runestones (under glass cover), 2 burial mounds, and a church. It is considered to be the cradle of Denmark, as the runestones mention the achievements of King Harold Bluetooth, who introduced Christianity to the country. It thus marks an important point in Scandinavian history - the transition from the pagan Viking Age to the Christian Middle Ages. You can see the church (not a lot inside, just some restored frescoes) and the runestones, and climb up the 2 mounds, in about 10 minutes. Thankfully, there is a rather interesting and modern museum (with free access!) only a few steps away. The information there is really well presented and covers every aspect of the site. It is only a short walk from a train station providing connections to the nearby town of Vejle. There also some direct trains to Copenhagen, so a day trip from there to Jelling is easily possible.