When president of China - Xi Jinping went to Mexico, he paid a visit to Chichen Itza on peninsula of Yucatan. What other mysterious ruins that look like 'ET-made'??

For the mysterious places around the world, people attempt to give different of explanations or theories to prove it. Many believes that before our generation, there's another civilization that can build these ruins with advanced technology.

Some other believes that there's no civilization before human being. The mysterious ruins are from outer space. It doesn't belong to any part of the earth. These places all have some kinds of ritual  or religious background. 

The relics get its' name of Tiwanaku civilizattion. Why people are curious about this place is because it has nearly 17000 years of history. People believe that some miraculous techniques were used to build it. The place is obviously used for a center of a religious ritual and it was the culture core of the region. How it remains complete for so long is also a puzzle. 

Considering all cities of Inca Empire, the old city Machu Picchu in Peru received a good care among all. It is also an attraction on the tourists' list. This old cities was once forgotten. On 1911, an archeologist named Hiram Bingham discovered it and make it known again. Through modern analysis, this relics was established around 1450s. It was offered as a shelter for Inca ruler. 

Stone spheres in Costa Rica is another place that full of mysteries. Many discussions about the stone, especially the techniques. The strange stone spheres were placed randomly since 1930s. Back in that time, people were curious about it. The stones size were differ from several millimeter to 2 meters. The rock is a kind of igneous rock called granite which is weight 16 tons. These human-made stone spheres were just way too incredible. 

For a period of time, the pyramid get all the attention. It was used to bury pharaoh and their stuff. However, the stories of these antiques remain unclear. The historical years, constructions methods and its symbols were still lack of a complete explanation. The myth is also the source of its charm. 

Do you remember the old Maya civilization's saying about the end of the world? It's said that the year of 2012 would be the end of the world. 

Chichen-Itza was built by the Maya as a archeology base. There are enormous stone architecture and the most famous one is Maya pyramid. The other pyramid is also called 'Warrior Temple'.

The most interesting thing is that there's a status of rain god on the top. According to Maya's culture, they used to pray the rain god with beating heart during the ceremony. 

In 1995, a swimmer and a professional diver from Okinawa, Japan, somehow swim much further from the coast and discover the underwater relics. It could be traced back to 8000 years ago. At first, people regarded it as a geographical texture that was shaped by the current. After the discovery, it was built by human. The evidence was that these stairs could not be formed by the current. 

The place is famous for its stonehenge. People believes that these Moai status are a part of the ancient worship ceremony. It was built between 1250 - 1500. Among these stone statuses the heaviest weight about 86 tons.

You've have heard of Nazca lines, they are the famous myth in the world. Many people wonder how these lines with a very wild scale curve on the earth. It could not be accomplish by normal human being. Nazca lines are the most unusual relics in the world.

About 300 graphics that curves with lines merge in the middle of Pampas. People give it different reason of its existence such as Olympics, astronauts, aliens or pop art, but non of those reasons are sufficient.

It is one of the must-see relics in the life time. The stonehenge located near Wiltshire, England and was built 2500 B.C. No one knows the meaning of the stonehenge, but it is the most well-known prehistorical ruins in the world.

Roman built three temple 16 B.C. Each of the temple has its yard and the wall surround it. The wall was built up with huge rocks that weight almost 1000 tons.