Portland once had a trolley system nearly as extensive as San Francisco's. A Willamette shoreline and a handful of cars that roll through downtown are all that are left of the late 19th Century line. They are restored now and provide a unique tour of the city. The two-line ride is free in downtown and hits the MAX stops every half-hour. Take the time to ride one instead of walking for a while. It is a nostalgic trip.
Attractions & Landmarks