Porto is my new favorite city! We took a tour in a tuck tuck all around the old city. It was fabulous! Ancient, beautiful, lively and elegant. Rather decrepit in parts, with quite a lot of homelessness unfortunately. A bit like SF in climate, culture and topography. The brightly colored houses climb the steep sides of riverside and bay, seeming to grow out of the medieval stone walls. Up on a plateau above the slopes and walls, a crazy mix of modern and medieval adorns the streets….. Amazing !