7. The Mayans : This is the 7th oldest and most treasured oldest civilization in the current world that we are living in. It has been used by the parent country in getting foreign currency from the people that are going there to visit that place so that they can see it. This civilization is known by every person in the world that has done some history in his or her life. It is also believed to have been in the southern part part of the American continent. This is also one of the places that there have been so many people that are visiting so that they can also witness the pillars that have been I existence for a very long time.