Green facades are considered climate-friendly and modern. These climbing plants, which are overgrowing a library at the university in Guiyang, Guizhou province, seem to have gone a little overboard. Teachers at the university planted more than 300 climbing plants 32 years ago, which now climb up the 12-story library building like a green castle. As beautiful as the façade looks from the outside, the lights are constantly on inside. And that, in turn, is less climate-friendly.