Although free to enter, you pay to see the cloisters and treasury, which at $4 euros seems a good deed more than anything else to support the oldest Cathedral in Lisbon. The cloisters are actually my favorite - you walk over the excavations that show the ruins of 8th century BC Roman plumbing systems, as well as Arab ruins of the Mosque that pre-dated the building of the cathedral here in 1147.
A beautiful and ancient church that has been changed and modified innumerable times in its 900 year history. I'm not religious, but there is something peaceful and majestic about this building nonetheless. I sat in contemplation inside for some time. Admire the architecture within, its large sweeping archways and sturdy pillars.
Large cathedral located just off the Plaza de Comercio in central Lisbon. Entrance is free but architecturally there is little to see as the interior and exterior is simply decorated. Best feature are the citrus trees surrounding the cathedral where you can reach up and grab a fresh orange.
Beautiful old church with display of the priest robes in all it's glory. The architecture is very impressive