How tall is the Burj Khalifa? How deep is the Lake Baikal? When was the Tower Bridge first opened? Players are taken on a trip around the globe: visit all the world’s most famous sights, up to the highest mountain tops and to the smallest islands, and to the depths of the deepest seas. From the equator to the earth’s poles, there’s lots to discover! Who knows how long the Amazon River really is? Or where the world’s steepest street is? Even if you don’t know with certainty, you still have a good chance to become the world’s greatest explorer. Points are also awarded if you come close.