Constitution square or as it is called by the Mexicans, the Zocalo, is the historic heart of Mexico city. The first stone of the square was founded by hernán cortés in 1520. It is built of the ruins of temples and palaces of the ancient city of Tenochtitlan. He was on a small island in the center of the lake. The building eventually collapsed due to the swampy area. In place of this city is now Mexico city.

On the site of the Aztec Palace is now the national Palace, this is the East side of Constitution square. The Palace was once the residence of the Viceroy of Spain. Now here is the office of the President and the whole administration. In the building there is a Museum devoted to the biography of Benito Juarez. Inside the Palace walls painted paintings on historical themes, their author – Diego Rivera.

On the square there is also the Cathedral, which is considered the oldest Christian structure in the entire America. There once was an altar, where the remains of sacrifices to the gods. The construction of the Cathedral lasted until 1813, for thirty years.

To the East of the Cathedral are the ruins of the main temple of the Aztecs. Most of the buildings have been restored. During the restoration there were found many artifacts and objects of everyday life of ancient people, which joined the collection of the local Museum.

Depart from Piazza Central streets of the capital, which are located along the old colonial mansions. In the centre of the square is a flagpole with the flag of Mexico. September 15, Independence Day in Mexico on Constitution square is the main part of the celebration.