Cherry Blossom Tunnel, Germany

http://www.wonderslist.com/top-10-most-amazing-tree-tunnels/

http://www.awaken.com/2014/04/20-magical-tree-tunnels-you-should-definitely-take-a-walk-through-2/

http://www.eyeopening.info/2014/04/11/20-dreamy-tunnels-time/

https://www.tumblr.com/search/the%20tree%20tunnel

http://flavorverse.com/15-worlds-beautiful-tree-tunnels-get/