The waterfront was interesting with a few abandoned buildings on pilings and many ‘graveyards’ of decaying pilings where there used to be buildings or docks. We saw several ships heading up the Columbia River being escorted in by Harbor Pilots, due to the treacherous Columbia Bar. Signs at various points along the Riverwalk identified different types of ships that use the port, their likely cargo, and the flags flown by their owners. It was a fun ride, and educational! And we rode past a trolley, powered by a generator it towed, that runs all along the waterfront, providing transportation from one end to the other, or just a fun ‘touristy’ ride.