Château de Bellocq dates from the end of the 13th century and consists of an irregular quadrilateral reinforced by seven towers, linked to the fortified house built in 1281. It was remodelled during the 14th century. The castle was burned down by Louis XIII in 1620 to prevent it being used by Protestants.
At the end of the 13th century, Bellocq was at the frontier with English controlled Guyenne. Gaston VII Moncade de Béarn built the castle on the Gave de Pau, the main river access to Béarn, to fortify his territory. Construction took place between 1250 and 1280. From the beginning, the castle was intended to house a large garrison. The simple plan of an irregular quadrilateral without a keep had four round towers, a semicircular tower and two square towers, one of which formed the main entrance. The curtain walls were pierced with cruciform arrow slits.
A year after completion of the castle, Gaston VII built a bastide close by and this, as well as the fortified church of Bellocq, became integral parts of the complex.
In 1370, Gaston Fébus reinforced the castle and built new strong points in order to preserve his territory's independence from the powerful kingdoms of France, England and Navarre.
In 1542, Henri II d'Albret (Henry II of Navarre) repaired the castle, in case of a Spanish invasion. From this date, the kings of Navarre sometimes left their castle at Pau for the country of Bellocq. Jeanne d'Albret stayed there regularly in the 16th century while she took the waters at Salies-de-Béarn.
In 1568, the French king Charles IX sent the baron of Terride to subjugate and govern the Béarn, then largely Protestant. Terride's troops occupied the region and re-established the Catholic hierarchy. The following year, Jeanne d'Albret asked count Gabriel de Montgomery to form an army of resistance - the castle at Bellocq passed into Catholic hands. It resisted a short siege by Montgomery. In 1620, the Béarn Protestants once again gaining power, Louis XIII had the castle burned down to prevent it being of use to them in the future.
From 1620, the castle played no further role in the history of the region and fell into disrepair.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.