If you have never been to Lisbon before you must go, this city is a true gem.
Its bright and lively, ancient and fresh, friendly and warm, rich and poor, has great food and nightlife, and is walkable. The main pedestrian ways all around the city are tiled (like above) as they have been for hundreds of years. There is an ever buzzing energy, and everything looks like a work of art. This city seems to ooze charm and beauty I believe it would be impossible not to enjoy yourself here.