The ancient Aztec city of Tenochtitlan was around at about A.D. 1325 and 1521. Believe it or not, they meant to build the city! They did this by following a legend...
The legend was: in the middle of the lake was an island, and on that island was a cactus, on that cactus was an eagle, in that eagle's mouth was a snake. If the person were ever to see this, the city is to be built there.
This flag is a representation of what what the legend looks like.
They even expanded the city using logs and mud. Along with building causeways, bridges, and floating gardens!
The Aztecs somehow managed to expand their land to about 2,500 acres! It is unknown what they used to accomplish this, but it is extraordinary to think about it.
This city is truly fascinating. It was built without any iron or wood tools. They had the wheel, but it was a kid's toy. It was never used for practical use.