The Earliest 16th-Century Monasteries on the Slopes of Popocatepetl is a serial property with 15 component parts located in the states of Morelos, Puebla and Tlaxcala in Mexico, built as part of the evangelisation and colonisation of the northern territories of Mexico.

From c. 100 B.C. to A.D. 1300, the Sierra de San Francisco was home to a people who have now disappeared but who left one of the most outstanding collections of rock paintings in the world. They are remarkably well-preserved because of the dry climate and the inaccessibility of the site. Showing human and animal figures and illustrating the relationship between humans and their environment.

Founded in 1546 after the discovery of a rich silver lode. Built on the steep slopes of a narrow valley, the town has breathtaking views and there are many old buildings. The cathedral, built between 1730 and 1760, dominates the centre of the town. It is notable for its harmonious design and the Baroque profusion of its façades, where European and indigenous decorative elements are found.

Located in the central part of the peninsula of Baja California, the sanctuary contains some exceptionally interesting ecosystems. The coastal lagoons of Ojo de Liebre and San Ignacio are important reproduction and wintering sites for the grey whale, harbour seal, California sea lion, northern elephant-seal and blue whale. The lagoons are also home to four species of the endangered marine turtle.

El Tajín's architecture, which is unique in Mesoamerica, is characterized by elaborate carved reliefs on the columns and frieze. The 'Pyramid of the Niches', a masterpiece of ancient Mexican and American architecture, reveals the astronomical and symbolic significance of the buildings. El Tajin has survived as an outstanding example of the grandeur and importance of the pre-Hispanic cultures.

Morelia is an example of urban planning which combines the ideas of the Spanish Renaissance with the Mesoamerican experience. More than 200 historic buildings, all in the region's characteristic pink stone, reflect the town's architectural history, revealing a masterly and eclectic blend of the medieval spirit with Renaissance, Baroque and neoclassical elements.

Founded by the Spanish in the early 16th century, Guanajuato became the world's leading silver-extraction centre in the 18th century.

This sacred site was one of the greatest Mayan centres of the Yucatán peninsula. The Maya and Toltec vision of the world and the universe is revealed in their stone monuments and artistic works. The fusion of Mayan construction techniques with new elements from central Mexico make Chichen-Itza one of the most important examples of the Mayan-Toltec civilization in Yucatán.

The holy city of Teotihuacan (the place where the gods were created) it is characterized by the size of its monuments –in particular, the Temple of Quetzalcoatl and the Pyramids of the Sun and the Moon, laid out on geometric and symbolic principles. As one of the most powerful cultural centres in Mesoamerica, it extended its cultural and artistic influence throughout the region, and even beyond.

Puebla, which was founded ex nihilo in 1531 has preserved its great religious structures such as the 16th–17th-century cathedral and fine buildings like the old archbishop's palace, as well as a host of houses with walls covered in tiles (azulejos). The new aesthetic resulting from the fusion of European and American styles were adopted locally and are peculiar to the Baroque district of Puebla.