One of the latest fun things that I have been doing with my iPhone is looking up various travel guides to see what cities I would like to add to my list of places to visit. I looked at an intricate travel guide on my iPhone for Portland, and it seems to have a number of different features, including Japanese Gardens, International Rose Test Gardens, and even a museum of Contemporary Craft.
If you are the outdoorsy type, you can take a bicycle ride around the Colombia River, and there are even weeklong bicycle tours available beginning in Portland. For beautiful dining, it's also a great idea to try the Stone Cliff Inn, which is up on a cliff overlooking the river and forests. Portland also has the fun cultural phenomenon of food carts, meaning that you can check out public areas of the city and purchase a number of different items, ranging from pizza to pitas, from a food cart on the street. The bottom line is that this is a city full of interesting travel ideas, and you can access all of these suggestions directly from your iPhone during your stay. It is definitely at the top of my list of places to go!