It was Manuel de Góngora, during his journey through the province of Jaén around 1860, who discovered this magnificent wall, stating for the first time that it was of Iberian construction. This Professor of Universal History and Inspector of Antiquities made a spectacular discovery: he was the first to identify the Iberian peoples of the Upper Guadalquivir. More recent studies have identified this type of cyclopean structure with towers and fortified enclosures dating from between the 2nd and 1st centuries BC. In these later stages of Iberian culture, the Romans had already reached the lands of the Guadalquivir, imposing new models of land occupation in which these great defensive structures appear to correspond to strategic sites that delimit and control territories, roads, water sources and even farmland. The cyclopean wall of Ibros, today integrated into the townscape, has survived to the present day as an important architectural element of Iberian culture. Its huge stones, originally joined without mortar, teach us much about those people: their fears, technological advances, struggles and wars, conquests, social transformations… It is located in the northern part of the historic centre, in the district known as "el señorío". Its location makes strategic sense, as it defended the most vulnerable area, closest to the riverbed. It is one of the most celebrated prehistoric monuments in the province of Jaén. A large structure, originally formed by a quadrangular enclosure surrounding the perimeter of the settlement, of which today only a corner measuring 12 to 13 metres long survives. Its enormous ashlar blocks are fitted together without mortar and measure 3.60 metres in length by 1.70 metres in width. We hear nothing more of the town until Christian times, when it was taken in 1157. It later fell once again into Arab hands, until it was definitively conquered by Ferdinand III the Saint. During the reign of Philip IV, the town's defence consisted of a small castle and a wall in which the Ibero-Roman cyclopean wall was reused. The old castle of Ibros must have gradually fallen into disuse, like the rest of the region's fortresses, since after the fall of Granada in 1492 there was no immediate external threat, and advances in artillery made such fortifications unnecessary.

Since the mid-20th century, the Romería de San Isidro has been held at Fuente Palacios on 15 May, in which the patron saint of farmers is carried in procession from Higuera de Calatrava to his hermitage, where locals gather for lunch and spend a festive day featuring float and horse competitions.

Opposite the church entrance, on higher ground, in the most representative space of the municipality, the Plaza de la Constitución, stands the Town Hall — a simple, functional building with an elongated layout, recently refurbished, dominated by exposed brick across its two sections, with an irregular, asymmetrical arrangement of openings, a stone coat of arms of the town featuring the imperial double-headed eagle as its heraldic emblem, and topped by a small pediment with a clock and bell, on whose iron structure the date 1933 appears.

The great appeal of this park lies in its views and the large number of benches for resting, along with its function as an eco-park, allowing visitors to exercise on its outdoor gym equipment, although access to these is over uneven ground. The park has a children's play area that is not accessible, as it has a step of around 12 cm.

This is the most notable building in Fuerte del Rey. Its construction was completed in 1796. It has a single floor with whitewashed pointed arches. The choir is set on a raised level facing the altar. The façade is built in ashlar stone, reinforced with strong buttresses. The most interesting feature is the bell gable at the foot of the church. It is arranged in three sections separated by moulding, with a window in the second section framed by ashlar surrounds. The final section, the bell gable proper, is not built in stone, and features two stylised bell openings covered with semicircular arches. It ends in a pediment shaped like a truncated pyramid, decorated at its base with graceful scrollwork.

Dating from the first half of the 20th century, it is one of the oldest flour mills in the province. It was a key facility for the municipality's economy during the post-war years. In 2004, it was listed in the General Catalogue of Andalusian Historical Heritage as a site of ethnological interest.

The small parish church, built on the site of the old Oratory of Santa Catalina and reached by a gentle flight of steps, was inaugurated in 1954. Its narrow, tall whitewashed façade features a simple lintelled doorway framing a semicircular-arched entrance with a broken pediment holding a cross, topped by a bell gable with three bell openings arranged in the shape of a truncated pyramid.