In my opinion, The Terracotta Warriors in Xi'an should be included on any historical 'Wonders of the World' list. After highlighting them as the one thing I wanted to make sure I saw in China, I finally got to visit them today and, as a history nerd, I loved it.
What is really interesting is that their discovery in the 1970's was a total accident. A local farmer was out digging a hole for a new well and fell through into a huge chamber. Inside this chamber he found the first few of the thousands of warriors you can see in the photo and since that day excavations are still going. The photo shows 'Pit One' (The farmer fell through at the front of this area) and they have so far uncovered 2,000 soldiers and expect to find another 4,000+! Then there are Pits 2 and 3 where they are finding many more, it is one almight army. Amazingly, no record of Emperor Qin Shi Huang (The first Emperor of China) coming up with the idea, it being created or it being hidden has ever been found in Chinese records!
The warriors were created to look after the Emperor in the afterlife and, if you think about it, they have done just that. By becoming one of the most famous places in the whole world they have ensured that they, the Emperor's tomb and all of it's contents will be protected by historians, archaeologists and governments for many many years.
Did You Know?: Every single warrior has it's own individual face, they have never found two the same. Even each terracotta horse in the army is different!