The Heart of Mexico
The capital of Mexico is Mexico City, known in Spanish as Ciudad de México. It is the political, cultural, and economic center of the nation, home to the country's government, its leaders, and many of its most important institutions. It is also the largest city in Mexico and ranks among the most populous urban areas anywhere on Earth.
A City Built on a Lake
One of the most remarkable facts about Mexico City is what lies beneath it. The city was built on the site of an ancient lake. Long ago, this was the location of Tenochtitlan, the magnificent capital of the Aztec Empire, which was constructed on an island in the middle of a lake. After Spanish conquistadors arrived in the early sixteenth century, they took the Aztec city and built a new colonial capital directly on top of its ruins.
A Capital High in the Mountains
Mexico City sits at an unusually high elevation. It lies in a wide valley high up in the mountains of central Mexico, more than two thousand meters above sea level. This makes it one of the highest major capital cities in the world. The high altitude gives the city a mild climate for much of the year, even though it is located in a generally warm part of the world.
A Sinking City
Because Mexico City was built on a former lakebed, it faces an unusual modern problem. The soft, soggy ground beneath the city is slowly compacting, which means parts of the city are gradually sinking. Some historic buildings and streets have visibly tilted or dropped over the years. Engineers work constantly to manage this challenge, a lasting reminder that this enormous modern capital stands on the bed of an ancient lake.
Source
This article was written using information from Wikipedia.