Guayabo National Monument is one of the most important archaeological areas discovered in the country. Here we find ancient sidewalks, house basements, aqueducts, water storage tanks, tombs, monoliths and sculptures, which reveal a high development in civil engineering, architecture and town planning.
Besides, it protects patches of high evergreen forests typical of promontory rain forest. Because of its position, Costa Rica played an important role as an area of encounter among different pre-Colombian cultures. The investigations have revealed that this archaeological place was populated between 1.000 B.C and 1.400 A.D.
The archaeological area encloses 15-20 hectares, of which only a small part has been excavated.