You can only teleport to another kingdom until you reach Palace level 6. In order to do so, click on the world map, choose a kingdom, and then find an empty tile. The chief of the clan that holds the Place of Power is the Konung, or the ruler of the kingdom. Place of Power is located in the very center of your kingdom and you can attain it by attacking and defeating the current Konung, then defending the PoP for six hours. The Konung receives a daily bonus of 10% of the silver from every clan chief in his kingdom, and also 20,000 prowess pints. The Konung can also place up to 16 positive and negative buffs to Jarls in his kingdom. Look for the kingdoms that have resources but zero troops as they are usually run by players who have stopped playing the game and are therefore ripe for the taking.