There is no doubt that although it is a city known for it’s hills, Lisbon is for walkers.  There are far too many small neighborhoods with winding streets to not go and explore by foot.  The architecture is unique, the people watching unprecedented and to top it off, there is phenomenal street art around every corner.  Lisbon is a serious triple threat. The city is a virtual open gallery, but to find a lot of the larger and more famous pieces be prepared to cover a lot of ground.  I met a Portuguese guy who was working for a tour company and he offered to give me a private street…