There are still, in some points of the historic centre, remains of the Primitive Wall, which remounts to the year 400. This wall had four doors or entrances. The main door was the Vandoma Arch that was east of the borough, between the Largo da Sé and the Rua Chã. From here, the wall surrounded the hill following closely the Escadas das Verdades (stairs), where the Mentiras Arch or Door used to be.

Anyone traveling from the neighboring municipality of Almeirim to Santarém via the Don Luís Bridge, which crosses the Tagus River, will find the walls of the Ribatejo capital before them. However, little remains of Santarém's imposing and ancient fortifications, although in the Jardim das Portas do Sol, which sits atop the walls, it is still possible to find three turrets. Several sections of walls and a stretch of the Porta de Santiago are other vestiges of what was once an important medieval castle.

Door in the village fence, to present a full arc with barrel vault.

This is one of the ancient city gates, in stone and Gothic style.

Granite portal with the house blazon on top.