New York City architects MOS designed the Hill House in upstate New York. It was designed with much consideration for its sloping site, the view, and the outdoors. In fact, an entire void of outdoor space penetrates the plan down to the home's basement living room...

The indoors and out are so integrated in the Hill House design that at first glance it appeared the moss garden up top was on the home's interior. Pull back a bit, though, and you see that the space is actually exterior, deftly woven into the volume of the house:

See the rest of the Hill House at MOS-office.net.