The lines between indoor and outdoor can be melted away by NanaWall. They call their window/door/wall systems opening glass walls. And they're awesome, giving the indoors an outdoor quality. The photo up top is of an apartment on Broadway being fitted with a NanaWall system. This particular system has sound-proofing, too. So when the system is closed, the view is still wide open but sound is shut out. The photos below show what we think is a pretty neat accessory. It's a raising screen panel. So, you have three options of openness: completely shut, open with screen, and completely open without screen. We love this ability to manipulate the indoor's relationship to the out at your fingertips.