Mosteiro de Leça do Balio
There has been a church on this patch by the Leça River since the 900s. And there may even have been a Roman temple here before that as it is on the old Roman road that connected Porto to Braga in the north.
When the church came under the control of the Knights Hospitalier in the 13th century they gave it the warlike appearance it has today, with a tough square tower defended by crenellations and equipped with arrow loops.
Inside, take a look at the column capitals showing bible scenes and the later recumbent funerary statue of the 16th-century bailiff Frei Cristóvão de Cernache.