Although there are a lot of steep hills to negotiate while visiting the sites here, there are a number of usful tram and bus routes that connect the different levels of the city. I too found the azuelejos impressive, especially those in the foyer of Sao Bento station and on the facade Congregados church. The Carmo church, city hall, Misericordia church and the Palacio da Bolsa were interesting architecturally, although after a while I found the predominant grey stone a bit depressing.