Rossio is the old central station in Lisbon, though it's now superseded. The station is right on Rossio Square in central Lisbon and main station used for getting to Sintra. The main attraction of this station is the pretty Neo-Manueline and Romantic façade that faces the the northwest side of the square. Apart from the usual intricate, organic carvings with marine motifs typical of Manueline, the entrance has an interesting double entrance of two intertwined horseshoe almost Neo-Mudejar like.
Pretty to look at and worth stopping for a look before entering the station.
The station has regular trains to Sintra, although at busy times, the trains are standing room only. There are a a few trains per day and the tickets let you take any one anyway!