Woah! How sweet is this? Vertical gardening in Madrid has to be the coolest thing I've seen in a long time! I'd love to know how long it takes to engineer and landscape it. The design is incredible. Think how amazing it would be to walk around a paved street lined with concrete & brick buildings to then be struck my a lush, green masterpiece! Breath-takingly beautiful. And here is a great web site if you're curious and would like to know more! Perhaps you'd like to start one, or you just want to know how it works.
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