Romanic church belonging to the Monastery of Rio Mau (Canons ruling St. Augustine), initially built in 1103, the current church being the result of a reconstruction started in 1151, having this work sponsored by the priest Pedro Dias. This reconstruction was done in 2 phases;

1st phase 1151-1160 started as usual by the chancel with a rectangular plan (6.1x7.1x5.6m CLH) is a vault of a cradle or cannon, the outer walls being reinforced with 2 stepped buttresses. There was a drastic reduction in the program, with a visible contrast between the decorative quality of the chancel and the nave's body.

2nd phase 1200 the nave (17.2mx8.6mx9.3m CLH) developed during the transition from the 12th to the 13th centuries, with a wooden beam cover.

In 1443 the monastery was extinguished and its goods passed to the Monastery of São Simão da Junqueira, existing nearby, which possibly contributes to the survival of the Romanesque church despite the fact that the convent buildings were demolished. Triumphal Arch