Cempoala or Zempoala (Nahuatl Cēmpoalātl 'Place of Twenty Waters') is an important Mesoamerican archaeological site located in the Úrsulo Galván Municipality, in the state of Veracruz. The word "Cēmpoalli" (from Nahuatl root "Cēmpoal) means twenty and "ā (tl)", means water, hence "twenty waters" perhaps because the city had a lot of aqueducts which provided the vital fluid to the numerous gardens and surrounding farmland fields and irrigation channels. The place was inhabited mainly by Totonacs, Chinantecas and Zapotecs.
Another version considers it is probable, the name referred to commercial activities, according to some sources, these activities were performed every 20 days in prehispanic times. A different version suggests the name meant “Abundant Water”. It was one of the most important Totonac settlements during the postclassical Mesoamerican period and the capital of the kingdom of Totonacapan occupied by the Totonac people
The name comes from the Nahuatl word Cēmpoalli, as Cēmpoal means twenty and ā (tl) means water, hence "twenty waters" perhaps because the city had a lot of irrigation canals and aqueducts which provided vital fluid to numerous gardens and surrounding farmland fields.
Another version considers that probably the name refers to commercial activities, that according to some sources, were carried out every 20 days in pre-Hispanic times. It was one of the most important Tepehua settlements during the post-classic period.
According to some sources, the city was originally founded at least 1,500 years before the Spaniards arrival and there is evidence of Olmec influence. Although not much is known about the Preclassical and Classic Era, the Preclassical town was built on mounds to protect it from floods.
The Totonacs moved into the area during the Toltec Empire peak, having been forced out of their settlements on the eastern slopes of the Sierra Madre Oriental. The totonacs ruled the area of Totonacapan which consisted of the northern part of Veracruz together with the Zacatlán district of Puebla with a total population of approximately 250,000 and some 50 towns. At its peak, Cempoala had a population of between 25,000 and 30,000.
Cempoala was the Totonac capital and was occupied by totonacs, chinantecas and Zapotec becoming the largest city in the Gulf. In its apogee, had a population of between 25,000 and 30,000 people and was one of the most important Totonaca settlements during the post-classic period. It is located one kilometer from the shore of the Actopan River and six kilometres from the coast.
Site History 
Research by Vincent H. Malmström (Dartmouth College) describes an interesting astronomical relationship between the three round rings found at Cempoala.
The Totonacs moved onto this coastal plain during the height of the Toltec empire (A.D. 1000-1150). Archaeologists believe the Toltecs had pushed the Totonacs out of their settlements on the eastern slopes of the Sierra Madre Oriental and down to the coast.
Cempoala lies on the flat coastal plain about six kilometers from the Gulf and a little more than a kilometer from the banks of the Rio Actopan (also called the Rio Chachalacas).
Cempoala and other coastal Veracruz locations were defeated by the Aztec armies of Moctezuma I (mid-15th century). They were heavily taxed (goods and sacrifice prisoners) and forced them to send hundreds of people as a tribute for sacrifices and as slaves. This condition treatment at the hands of the Aztecs created the situation which led up to the defeat of the Aztecs by Cortez in the 16th century.
When the Spaniards arrived in 1519, the Totonacs had been suffering Aztec domination for several years.
The Spaniards heard of a town on the way named Zempoala while at their malaria-ridden camp of San Juan de Ulua. They marched over and sent word of their arrival, and upon their arrival were met by 20 Zempoalan dignitaries.
In town, they met with "Fat Chief, Xicomecoatl", who fed them and gave them quarters. The Totonac presented Cortez with numerous gifts, including gold jewelry.
Xicomecoatl commented of his many complaints against the great Montezuma.
Cortez promised alleviate his concerns. At Quiahuiztlan, the Spaniards and Totonacs forged their alliance against the Aztecs.
Spaniards and Totonacs had the same fate. In August 1519, Cortez and 40 Totonac warriors and 200 porters left for Tenochtitlan. The effort ended with the fall of Tenochtitlan and Moctezuma II, the Aztec Tlatoani, as hostage.
The Site 
The site buildings show impressive squares and fortresses’ surrounded by vegetation which permanently covers this area, called "Place of accounts", as was called the Mexica rulers, because it was here where all taxes and tributes from the region were collected.
What today is the archaeological site, previously was the most important political-religious Center of the city, whose constructions were made with river stones, jointed with mortar and flattened with the lime produced from burning shells and snails, obtaining in this way that buildings shone from far away as if they were built in silver.
The urban Cempoala complex includes several buildings and major architectural structures, not only by its construction, but by its historic importance, often unknown, as for example, in the part of the site now known as walled system IV, Cortés successfully faced the forces of Pánfilo de Narváez, thus consolidating his leadership in the colonization of the Mexican territory.
The main structures at Cempoala, include the following:
- Templo del Sol or Great Pyramid
Or Sun Temple built on the same platform as the Templo Mayor, separated by an ample square. This is probably the most impressive structure on site. The great temple resembles the Sun Temple in Tenochtitlan. The Quetzalcoatl Temple, the Feathered Serpent God is a square platform, and the Ehécatl Temple, the wind God is round.
- Templo Mayor
The top part is surrounded by battlements.
- Templo de las Chimeneas
Or chimney temple, has a series of semicircular pillars 1.5 meters high, because of this peculiar shape, the building is named.
- El Pimiento
It has a three bodied structure, its most notable feature is its exterior decor based on skulls representations.
- Moctezuma's Palace
- Templo de la Cruz
Or cross temple, maintains some fresco mural sections with celestial motifs.
- Templo Las Caritas
The so-called Temple of Charity standing about 200 meters to the east is a two-tier structure decorated with fragments of stucco reliefs. It is named for the hundreds of stucco skulls that once adorned the facade of a small structure at the base of the temple's staircase-archaeologists believe this complex was dedicated to the god of death.
It consists of two overlaid basements with top side elements, an open room, two decorative belts, the lower has murals depicting the sun, Moon and Venus, as early morning star, the higher section has a large amount of clay “little faces” or little skulls. The Structure is decorated with stucco faces on the walls and hieroglyphs painted in lower sections Gran Pirámide and the wind god Ehécatl worship altar.
- Other Mounds
There are other mounds, unexcavated, that cannot be visited, located within Cempoala current houses. Some of the structures there are probably built in the same style as were the residences of the prehispanic commoners.
Astronomy in Cempoala 
Some research by Vincent H. Malmström of Dartmouth College describes an interesting astronomical relationship that exists because of the three round rings found at Zempoala. We will quote a part of his discussion concerning the Three Ceremonial Rings of Zempoala.
Beneath the massive pyramid (north eastern corner) in the central plaza of Zempoala, are three puzzling stone rings, each made from rounded beach cobbles jointed together to make small, stepped pillars. The largest rings has 40 stepped pillars, the middle ring has 28, and the smaller ring 13, around its circumference. It seems that three rings were used to calibrate different astronomical cycles, possibly by placing a marker or an idol from one pillar to the next, day after day.
The stone rings viewed from the top of the main pyramid, are surmounted by 13, 28, and 40 step like pillars, might have been counting devices to keep track of eclipse cycles, by Totonac priests.
It is possible that by using the rings, Totonacs priests were able to calibrate movements of the moon. There are reasons to believe these rings provide further evidence of the intellectual curiosity and architectural ingenuity of the early Mesoamericans."
Site History after 1519 
Cempoala was a prosperous city in 1519, in which the spaniards arrived in Mexico and established alliances with some groups to go towards the capture of Tenochtitlan, the city of Cempoala then numbered approximately 20,000 inhabitants and was the most important ceremonial and commercial center of the Aztec empire, more so than Tlatelolco, the Spaniards called it in Villaviciosa, meaning fertile village by the many festivals and vast orchards and gardens available and festive and joyful inhabitants character, was later known as new Seville for its resemblance, as per the spaniards, with the Iberian town.
Between 1575 and 1577 a smallpox (matlazahuatl) epidemic decimated the population, it is estimated that two million people lost their lives in Mesoamerica, the city was totally abandoned, and the few survivors moved to the city of Xalapa, eventually fell into oblivion, until archeologist Francisco del Paso and Troncoso rediscovered it.
After the victory and conquest, the Cempoala Totonacs soon took their new destiny next to their foreign partners: were re-located and had to leave the city as they were Christianized, banned from practicing their ancient cults and were turned into slaves to work new Spanish sugar cane fields.
Cortés first arrived at Zempoala in 1519 with 500 conquistadores who then made a long trip up into the highlands using the same routes used to haul maize to Tenochtitlan. In the Mexican lands, where it was hosted by a gentleman called, by its extraordinary corpulence, the "fat Cacique". The town was settled around walled perimeters delimiting temples and palaces; dating back to the 11th to 16th centuries.
- "Cempoala Archaeological Site" (in Spanish). Veracruz: Veracruz Portal. Retrieved Sept. 2010.
- "Cempoala Archaeological Site" (in Spanish). cdtravel.net. Retrieved Sept. 2010.
- "Visit to the Zempoala Archaeological Ruins". Audre & George DeLange. Retrieved Sept. 2010.
Archaeology of Native North America, 2010, Dean R. Snow, Prentice-Hall, New York. pp. 188
- Catholic Encyclopaedia article on the Totonac Indians
- Article on the Cempoala site
- Cempoala, Mexico is a map from 1580