We love seeing natural architecture here at Inhabitat, and the leafy green Kleven train tunnel is a beautiful example of what happens when nature is allowed to grow freely around manmade infrastructure. The tunnel was made over many years as the passing train molded the trees’ lines. The train turned a luscious piece of woodland into a unique passageway as it traveled back and forth 3 times a day over several years.

In addition to serving as a train route, the tunnel is used by lovers to make a wish – it is said that if they are sincere in their love, their wishes will come true. If you are out and about Ukraine, don’t miss this fantastic green passageway – whether you are with a loved one, or on your own.