The ruins of Guayabo are an archaeological site located in the province of Cartago, in central Costa Rica. The site dates back to the pre-Columbian period and was occupied from 1000 BC until the 16th century, when the Spanish conquistadors arrived in the region. The ruins were discovered in 1968 by Costa Rican archaeologist Carlos Aguilar Piedra. Since then, numerous excavations have been carried out to study the site and learn more about the culture that created it. Although the origins of these buildings remain a mystery, archaeologists believe that the city was founded by pre-Columbian indigenous peoples between 1,000 and 1,400 AD.
