Brooklyn-based artist Michael Neff invested some time to collect a number of Christmas trees to create a temporary hanging garden under the Brooklyn-Queens Express Way.

Modern Christmas trees (when treated right) stay green for some more weeks after they finished their job in the living room. These trees have been growing for at least a year to finally die in between the rubbish on the streets. Neff thinks that’s a waste, according to Inhabitat, and collected a dozen of them to make a dreadful underpass in his neighborhood a little more green.