From the harbour, you can walk though Alter Elbtunnel from 1911 to the other side of the river Elbe and have great views from there. A lift or stairs bring you the 24 meters down into the tunnel. You then walk through one of its two 427 meter long pipes having 12 meters of water over your head. The tunnel is decorated with ceramic arts of maritime motives (e.g. fish, mussles, seals, old boots). At the other side you again walk up the stairs or take a lift. Go out and back to the river to "Aussichtspunkt Steinwerder" for great views on LandungsbrÃƒÂ¼cken and the sights behind. Even cars can pass though the tunnel (only Mon-Fri, 5:30-20:00, for 2 Euros) being brought down with 4 lifts. You find the tunnel at LandungsbrÃƒÂ¼cken in the building having the biggest green dome. Signs to "Aussichtspunkt Steinwerder" also point to it. For pedestrians and bicycles it is free and open all day and night, every day.