Tram #28 is special. Crossing most of the old town, you may enter it at Chiado and it takes you westbound to Sta Catarina (sightseeing), S. Bento (Parliament and PM residence), and Estrela (Church); eastbound to Praca do Comercio (descend at R. Vitor Cordon), the Cathedral, Santa Luzia (sightseeing, and best place to start Alfama visit), the castle of S. Jorge (exit at Lg. Portas do Sol), S. Vicente (church, national pantheon, and flea market two times a week), and Graca (church).