After the first quarter of the 19th century, Sietecueros neighbors make a petition to the supreme government of Costa Rica, (Braulio Carrillo Colina was the then president), which was to segregate them from the town of Santa Cruz and add them to Guanacaste City, in civil and ecclesiastical aspects.

One of the attractions offered by this district are the archaeological investigations which have found variety of pieces dating back thousands of years, which is why it is known as Archaeological City, however, the municipality officially seeks that title by executive decree, with the purpose of developing an entire project to publicize and promote this area of archaeological treasures that come from 800 BC to 1500 AD, belonging to periods polychrome Old, Middle and Late.

[5] The different archaeological studies conducted in this region, refer to various types of roads and paths, used by ancient people.

[6] Filadelfia lies in the middle reaches of the Tempisque River surrounded by large fields devoted to sugarcane cultivation.

It processes half a million tons of cane yearly, grown by over 500 farmers in the Tempisque basin.

[7] In addition to the sugar, the plant also produces animal-feed byproducts and electricity-generating biomass from the cane waste.

Azucarera El Viejo also maintains a private wildlife reserve of 2000-plus hectares, protecting a large number of local flora and fauna typical of dry tropical forest in the region.

Melon planting starts in November and ends in February, is collected from January to early May, the vegetative cycle for production is 60 days.

The export of melon requires strict control of product quality and optimum temperature and adequate transportation.