My favorite part of visiting Porto was definitely looking at all the gorgeous tile work all over the city. It is called azulejo and you can read more about it here. The "azul" part will tip you off that blue is the preferred hue for these traditional tiles. I couldn't stop taking photos of them.
And here are a few other photos of building facades from around town. Even when tile is not used, the colors are lovely. Porto has a great "lived in" feel - it's a little run down, but in a very charming, approachable way.
More Porto to come.