This Is What North America's Largest Indoor Living Wall Looks Like

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Kim Wilkie designed and installed the 4,000-square-foot wall in Pennsylvania's Longwood Gardens, where you'll find 47,000 living plants. The wall has a fully automated irrigation system and is just generally super.

If this is North America's largest indoor living wall, does that mean South or Central America has an even bigger one?

See more photos at Inhabitat.