This pre-Aztec archaeological site is a nice day trip from Mexico City (about 25 miles out from the city). It is one of the largest archaeological sites in the country and at its cultural height (150 to 450 AD) was the largest city in the world with a population of over 200,000. The site contains two large pyramids - Pyramid of the Sun and Pyramid of the Moon - and many smaller pyramids flanking the Avenida de loss Muertos (Avenue of the Dead). The Temple of Quetzalcoatl is also worth seeing. Visitors may climb to the top of the two large pyramids for spectacular views of the entire site and the surrounding countryside and mountains. Transportation Options: bus service, tour bus, or car. For public bus (very inexpensive option), take Metro Line 3 to Indio's Verdes station in the north and transfer to a bus bound for Teotihuacan. Additionally, many tour companies lead tours of various lengths – from several hours to all day – out to Teotihuacan (such tour companies will pick you up from your hotel with comfortable tour bus service and drop you back at your hotel at the end of the tour day).
Basilica de Nuestra Sanora de Guadalupe (Basilica of Our Lady of Guadalupe) - Guadalupe is the patron saint of Mexico. The image of Guadalupe that appeared to Juan Diego on the very hill (Tepic Hill) where the Basilica is constructed is an important and easily recognizable national symbol. There are actually two basilicas on this hill, an old and a new (more modern) one. Construction of the old basilica began in 1531, and of the new in 1976. The apron of Juan Diego, with the image of Guadalupe is displayed for all to see in the new Basilica. It is most likely the most important religious building in Mexico and possibly in all of Latin America. The site is particularly important in Catholicism as it is the second most visited religious site after Vatican City. Metro Station: La Villa Basilica (Line 6)
Museo Nacional de Anthropologian (National Museum of Anthropology) - Considered to be one of the great museums of the world, the Museo Nacional de Anthropologian contains perhaps the world's largest collection of pre-Columbian artifacts and art. The museum is massive and is arranged according to each of the particular pre-Columbian cultures, with entire halls and galleries dedicated to each. The central courtyard is famous for its vast square concrete umbrella. Popular exhibit halls include those dedicated to the Olmec, Maya, and Aztec civilizations. Metro Station: Auditoria (Line 7).
Temple Mayor (Great Temple) - These are the archaeological ruins of the Aztec Tempol Mayor, which was dedicated to the Aztec gods of Tlaloc (god of rain) and Huitzilopochtli (god of war). This was the primary temple and focal point of the great center of the Aztec capital of Tenochtitlan, which at the time was located in the same location but on a series of islands on Lake Texcoco. Many of the temple's materials were used by the Spanish to construct the adjacent Cathedral Metropolitan. Metro Station: Zocalo (Line 2).
Cathedral Metropolitan (Metropolitan Cathedral) - This is one of the largest cathedrals in the city and contains several architectural styles as it was built over a period of around 250 years. It is located on the north side of the Plaza de la Constitution. Many of the materials used to construct the cathedral came from the destroyed Aztec temple that stood on the same site. Due to the nature of Mexico City's soil, the cathedral is slowly sinking (as are many historic structures). If you take a stroll through the cathedral's vast interior, you will see many religious displays and examples of architecture. If you are lucky you may also here the massive pipe organ or the cathedral bells. Metro Station: Zocalo (Line 2)
Basilica de Nuestra Sanora de Guadalupe (Basilica of Our Lady of Guadalupe) - Guadalupe is the patron saint of Mexico. The image of Guadalupe that appeared to Juan Diego on the very hill (Tepic Hill) where the Basilica is constructed is an important and easily recognizable national symbol. There are actually two basilicas on this hill, an old and a new (more modern) one. Construction of the old basilica began in 1531, and of the new in 1976. The apron of Juan Diego, with the image of Guadalupe is displayed for all to see in the new Basilica. It is most likely the most important religious building in Mexico and possibly in all of Latin America. The site is particularly important in Catholicism as it is the second most visited religious site after Vatican City. Metro Station: La Villa Basilica (Line 6)
Museo Nacional de Anthropologian (National Museum of Anthropology) - Considered to be one of the great museums of the world, the Museo Nacional de Anthropologian contains perhaps the world's largest collection of pre-Columbian artifacts and art. The museum is massive and is arranged according to each of the particular pre-Columbian cultures, with entire halls and galleries dedicated to each. The central courtyard is famous for its vast square concrete umbrella. Popular exhibit halls include those dedicated to the Olmec, Maya, and Aztec civilizations. Metro Station: Auditoria (Line 7).
Temple Mayor (Great Temple) - These are the archaeological ruins of the Aztec Tempol Mayor, which was dedicated to the Aztec gods of Tlaloc (god of rain) and Huitzilopochtli (god of war). This was the primary temple and focal point of the great center of the Aztec capital of Tenochtitlan, which at the time was located in the same location but on a series of islands on Lake Texcoco. Many of the temple's materials were used by the Spanish to construct the adjacent Cathedral Metropolitan. Metro Station: Zocalo (Line 2).
Cathedral Metropolitan (Metropolitan Cathedral) - This is one of the largest cathedrals in the city and contains several architectural styles as it was built over a period of around 250 years. It is located on the north side of the Plaza de la Constitution. Many of the materials used to construct the cathedral came from the destroyed Aztec temple that stood on the same site. Due to the nature of Mexico City's soil, the cathedral is slowly sinking (as are many historic structures). If you take a stroll through the cathedral's vast interior, you will see many religious displays and examples of architecture. If you are lucky you may also here the massive pipe organ or the cathedral bells. Metro Station: Zocalo (Line 2)
https://en.wikipedia.org/wiki/Teotihuacan