Costa Rica Archaeology
Unlike Guatemala, with Tikal, or Peru, with its Inca ruins,
Costa Rica isn’t known for its archaeological history. Yet on the forested slopes of Turrialba Volcano lie the remains of a pre-Columbian town that people occupied for more than two thousand years. They left it around 1400 CE, about a century before the Spanish arrived. Today it is protected as Guayabo National Monument, the main archaeological site in Costa Rica open to visitors.
Are There Pyramids in Costa Rica?
No, not in the sense most people mean. Costa Rica has no Egyptian-style or Maya-style pyramids. Its best-known archaeological site, Guayabo National Monument, has circular stone mounds that once supported wooden buildings, along with paved roads, aqueducts, and petroglyphs built by pre-Columbian people.
Guayabo is sometimes described online as having “pyramids,” but the mounds are low, round platforms. They don’t resemble the stepped pyramids at Tikal or anything in Egypt. The site was occupied from roughly 1000 BCE until about 1400 CE.
The excavated core contains 43 stone foundations, including a central mound much larger than the rest, plus paved roads, stone tombs, and three aqueducts. In 2009, the American Society of Civil Engineers named Guayabo an International Historic Civil Engineering Landmark for its roads and water systems. The site makes far more sense with a guide, who can explain how each structure fit into daily life.
Guayabo Ruins
Guayabo has none of the pyramids of Tikal or the fitted stonework of Machu Picchu, but it holds plenty of unanswered questions. The people who lived here left no written records, and archaeologists don’t know what they called themselves or their town. The site was explored as early as 1882. Systematic excavation began in 1968 under Carlos Aguilar Piedra of the University of Costa Rica, and research continues today. The excavated settlement covers about 20 hectares (roughly 50 acres) of a 233-hectare monument. The rest protects the surrounding rainforest, and much of the wider area has never been dug.
Ancient Engineering in Costa Rica
What we know about Guayabo’s residents comes from what they built. Their roads, paved with rounded river stones, run out from the center of the settlement into the forest and once linked Guayabo with neighboring communities, which suggests regular trade and travel. Their aqueducts carried spring water through stone-lined channels to storage tanks around the town, and parts of the system still carry water today. Tombs found across the site point to the importance of burial and ritual.
The layout itself says something about how the town was run. The large central mound, controlled entrances along the roads, and differences in the size of house foundations all suggest a chiefdom: a society led by a chief who held both political and religious authority. Estimates of how many people lived here vary. The ASCE puts the population at around 1,500 to 2,000, while some researchers have proposed much higher figures. Why the town was abandoned remains unknown.
Petroglyphs at Guayabo
Carved boulders appear throughout the site. Some show recognizable animals, including jaguars and crocodilians, which held a central place in the beliefs of the people who lived here. Others are abstract designs whose meaning is still debated. One boulder carries both a jaguar and a crocodile carved together. Many carvings are easy to miss, so ask your guide to point them out along the trail.
About Costa Rica Maya Ruins
There are no Maya ruins in Costa Rica. The Maya civilization was centered farther north, in present-day Mexico, Guatemala, Belize, and Honduras. Costa Rica’s ancient sites come from different cultural traditions. Archaeologists place Guayabo in a region whose societies stretched south toward Colombia, which is why its architecture looks so different from Maya cities.
Costa Rica’s other well-known archaeological attraction is in the Diquís Delta in the country’s south. There, chiefdom societies placed large carved stone spheres in their settlements between about 500 and 1500 CE. In 2014, four of those settlements were inscribed together as a UNESCO World Heritage Site. How the spheres were made, and exactly what they meant, is still a matter of research.
Visiting Guayabo
Guayabo National Monument lies about 19 kilometers (12 miles) northeast of the town of Turrialba and roughly 84 kilometers (52 miles) from San José. The site is open daily from 8 a.m. At about 1,100 meters (3,600 feet) above sea level, it is noticeably cooler than Costa Rica’s lowlands. The walk through the ruins follows mostly gentle trails over stone surfaces that can be uneven and slippery after rain, so sturdy shoes are worth bringing. The trails pass through forest where birds and butterflies are common. Heavy rain can occasionally close the site, so it’s wise to build some flexibility into your plans during the green season.
Guayabo fits well into a few days in the Turrialba area or as part of a broader look at Costa Rica’s history and culture. Browse our
Costa Rica cultural tours for ideas on how to include it in your trip.
