Santo Tomás is the patron saint of Bolibar. The winter festivals mark its calendar. The church of Santo Tomás is another of the municipality’s medieval treasures. It dates from the 10th century and was rebuilt during the 17th and 18th centuries. It has a single nave and a ribbed vault. It has the structure of a temple-fortress and consists of two cylindrical towers. Its altarpiece is neoclassical and is presided over by the image of Saint Thomas the Apostle. The portico houses the chapel of Nuestra Señora de Coromoto, patron saint of Venezuela, a chapel that replaced an earlier one in 1959 as part of a tribute to the “Libertador”.
The church of Bolibar and the church of Ziortza had serious disputes over the control of the territory for years until Ziortza became a collegiate church in the 14th century, gaining supremacy over Bolibar.