Take the old trolley #28 up to the Alfama and exit the trolley at St. Anthony's Church. You will see the Se directly behind St. Anthony's.
St. Anthony's is a Baroque church that was built in the 18th c. over the birthplace of the saint. There is a small museum next to the church.
Behind the church and across the trolley tracks and the street, is the Se which is Lisbon's oldest church and the cathedral of the city. The structure is very large and of Romanesque origin dating back to the 12th c. It was built on the site of an Arab mosque after the first King of Portugal, Afonso Henriques captured the city from the Arabs. There is a museum, many tombs, and an archeological dig here.
St. Anthony was baptized Fernando Martins de Bulhoes in the Se in 1195.
Spend some time in the Se as it is full of history. Wander around and relive ancient history. You can almost imagine yourself in the Se centuries ago! If you are into history and/or travel adventures, take the time to add the Se to your itinerary.
When you are ready to go, you can take the trolley or walk further up into the Alfama for more sightseeing discoveries.
I wander the narrow streets and climb the steep steps in this ancient quarter and constantly find new and interesting places and people to talk to.
Try the sardines that are grilled everywhere in the Alfama. Just follow the delicious aroma.