The two top-floor residences have additional living space provided by so-called "crystalline pavilions" – a pair of zinc-framed structures that adorn the rooftop, along with patios, decking and greenery.
The High Line (USA). 'Refurbished rail tracks have been transformed into grassy catwalks in the sky. It’s the paradigm of urban renewal gone right, enjoying its status as one of the city’s most beloved public spaces.' http://www.lonelyplanet.com/usa/new-york-city/sights/outdoors/high-line