Mexico. Pyramid of the sun and the Moon Pyramid, ancient Mexican religious buildings. The site of Teotihuacan, an Indian, located 40 kilometers northeast of Mexico City. Pyramid of the sun (Spanish: Pirámide del Sol) is the largest building in the ruins of Teotihuacan, Mexico, with a height of 63 meters, and it is also one of the largest buildings in Central America. The United States of Mexico. Mexico is a country located in the south of North America. It borders the United States to the north, Guatemala and Belize to the south, the Gulf of Mexico and the Caribbean to the east, and the Pacific Ocean to the southwest. Its land area is1964,400 square kilometers. The capital of the country is Mexico City, and the official language is Spanish. In 2023, the population of Mexico was10.29 billion, of which Indo-European mixed-race people and Indians accounted for more than 90% of the total population. The country is divided into 32 states (Mexico City, the capital, has been changed from a federal district to a state), with cities (towns) and villages under each state.