After taking in the panoramic views of the Cascade Mountain range and downtown Portland, head back down via the Marquam Trail, following the 4T signs to the Portland Aerial tram, where futuristic pods offer a birds-eye view of the city while transporting you 3, 300ft in three minutes, depositing you at Southwest Waterfront Street directly across from the Portland Streetcar, which will take you back downtown.
BBC: Portland's urban adventures