The 16th-century church and monastery of São Gonçalo dominates the south side of the bridge, its richly carved Renaissance portal facing the river. Construction was started under King João III in 1540 and continued under three later kings — the row of crowned royal heads above the portico belongs to all four — and the building was completed only in 1620.
Inside, the gilded baroque retábulo and the tomb of São Gonçalo himself are the centrepieces. The adjoining cloisters now house the Amadeo de Souza-Cardoso Museum, so a single visit covers both. The monastery is also worth circling from outside for the view back over the bridge and town.