Total transformation of 1980s duplex penthouse results in attractive open-plan interiors and vastly improved layout

​​​​​​​A major attraction when the owner bought this penthouse was its rooftop greenhouse and terrace providing stunning views over the Manhattan skyline. As part of the overall renovation of the property, the greenhouse underwent some renovation of its mouldings, while new indoor and outdoor furniture plus landscaping make it the perfect entertaining spot any time of day or year.