Visiting the most significant sites on the Planet is a pretty cool hobby.   The seven wonders of the world is a very good example of that, amongst the most amazing sites is Chichen Itza which is a major Mayian city abandoned by the Mayan people maybe 1,200 years ago, it is still in great condition and is now a huge tourist attraction.

Their city includes various temples, a sort of basketball pitch, where the winner got their heads cut off! Plus a fantastic observatory used to watch the rise and setting of both the sun and moon.