In a densely-packed neighborhood in Copenhagen sits a rather lovely, old co-op with plenty of windows and nice views for its residents. Although it was a great place to live, it had no green space. So the residents of the co-op hired JDS Architects to create bridges, stairs, a deck, and even a grass-seeded slope to make a new addition look and work like any patio on the ground might. They also used fence-like railings to reinforce the earth-in-the-sky aesthetic.
Not your average rooftop patio. Neat, huh?