Consecrated in 1213, this lovely church is a prime example of Sardinia's Romanesque-Pisan architecture. It features a simple facade punctuated by a classic rose window and an austere columned interior. To enter, you have to ask at the nearby Museo del Territorio Trataliese and buy a ticket. Note also that the visiting hours change monthly – for the latest check the local council's website: www.comune.tratalias.ca.it.