This is a fifteen hundreds temple, placed next to the Castle. It is considered one of the most important religious works on the Renaissance final phase in the Alentejo area. Its filling includes the tombstones with the most remarkable Portuguese families’ Coat of Arms. The project is accredited to Miguel de Arruda.

This church was built on the transaction period from the XIII century to the XIV century. It underwent several changes afterwards. It has baroque elements such as the campanile. On the inside it must be stand out the Holly Water Font.