About

The first ring of walls encircled the Morro da Sé (The Cathedral Hill) on the Pena Ventosa heights which at one point was of vital strategic importance regarding control over passage up the Douro.
Only a few remains survive, partly hidden by rows of houses. This early wall may have been put up by the Romans and then rebuilt in the 12th Century. The wall had four doors or entrances. A small stretch of the wall can be seen near the cathedral, where it is identified by a plaque.

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