@bubbleme.__: You can actually walk UNDER a river in Hamburg 😳🌊 One of Germany’s coolest hidden spots has been here for more than 100 years. [Hamburg] [Germany] [Elbe Tunnel] [Old Elbe Tunnel] [Hamburg hidden gems] [Germany travel] [underground tunnel] [Europe travel] [German engineering] [things to do in Hamburg] #Hamburg #Germany #studyabroad #studentlife #internationalstudent