Portland is more than Powell's Books and Voodoo Donuts. Here are some other awesome things to check out.
Limestone caves - South Australia
Portland Tourism: 690 Things to Do in Portland, OR | TripAdvisor
10 Things to Do in Portland in 24 Hours - The Lemon Bowl
Portland, Oregon, US
3 Days in Portland: Suggested Itineraries - Tours, Trips & Tickets - Portland Travel Recommendations | Viator.com
Portland Tourism: 150 Things to Do in Portland, ME | TripAdvisor
Visiting an Urban Waterfall - Ira Keller Forecourt Fountain Park (+ 25 Free Things to Do in Portland Oregon) // localadventurer.com
The signpost in downtown's Pioneer Courthouse Square offers perspective on Portland's location.
Powells City of Books (+ 25 Free Things to Do in Portland Oregon) // http://localadventurer.com