The city of Lisbon is built on seven hills, so though Lisbon is walkable, you will be walking uphill a lot. This makes walking a little bit exhausting, but it doesn’t change the actual distance between neighborhoods, which is not much. Lisbon is definitely a walkable city, but not for those with severe mobility problems. If you don't want to walk, Lisbon has a great public transportation system - which you can access for free with the Lisbon Card! Get your Lisbon Card here!