If you want to get a good impression of the historical city of Lisbon, and also see how small the city is, a must do attraction in Lisbon is to take the #28 tram, ‘elétrico 28′. This legendary tram 28 is a tourist attraction in itself. It goes all around town. Of course you can hop on and hop off whenever you want, but tickets are paid every time you take a ride.
Beside the #28 tram, the easiest way to reach from Rossio Square to the Barrio Alto neighborhood, is by Elevador da Glória.(in the picture)
This neighborhood, with its cosmopolitan and bohemian vibe, is probably known more for its bars and nightlife than for its day life. But I would suggest a walk during the day, as you will meet the locals and find alternative commercial spaces, tattoo and piercing shops, and also multi-brand stores.
Besides being a linchpin of the cultural and artistic life of the city, it's a typical neighborhood in Lisbon. Built in the late 16th century, secular houses and traditional commerce can still be found here. The street names Diário de Noticias and Século are newspaper names, since back in the 1970s and '80s, most of the press was located here.