Highlights: Benefiting from Lisbon's rolling terrain, the bright and spacious Puerta del Sol viewing platform has a view overlooking the old town of Alfama, where you can enjoy a magnificent view of the east of the city and the Tagus River. The viewing platform has also become a paradise for photographers. From this viewing platform, you can see the monastery of St. Vincent outside the city, as well as the typical features of the Alfama district: narrow winding streets, old houses, all the way to the Tagus River. In the square of the Sun Gate Observation Deck, there is also a white stone sculpture. The figure on the statue is Saint Vicente, who is regarded as the patron saint of Lisbon. Dressed in a robe, his holy and serene posture is awe-inspiring. São Vicente also holds a boat carrying two crows - a symbol of the city of Lisbon.