The patron of Bortigiadas is San Nicola di Bari (Saint Nicholas of Bari), celebrated on 6 December; the village holds the Chiesa di San Nicola.
The municipality also holds the Chiesa della Santissima Trinità, the church of San Pancrazio, the church of Santa Lucia, the church of the Spirito Santo, the Nuraghe Cuada and the Museo Mineralogico (Mineralogical Museum).