Bob and I boarded a train from Cascais to Lisbon. We were also accompanied by the wife of one of Jane's co-workers. We spend much of the day touring Lisbon via the top of the double Decker bus. It was designed to stop in several areas of interest and one could get off and re board after touring the area. Due to limited time we only stopped in one area. Most of the photos of Lisbon you have seen and more to come were taken from top of the bus. (except for a few minutes that it rained) I think you could spend at least three or four days doing that tour to see everything.