One of the oldest buildings in La Fatarella was a Muslim watchtower in the site where the chapel of Mare de Déu of the Misericòrdia stands today.

The origins of the Fatarella present town is medieval, as the facades of many houses show, having porticoes of stone with thresholds carved with different symbols and inscriptions.

During the Middle Ages the town was walled to offer protection for its inhabitants, mainly from brigands and wolves.

This defensive system continued until well into the 17th century, when the a population boom forced the city to expand beyond the walls.

Nowadays, vestiges of these walls can still be seen, from which access doors on the enclosure can be deduced.