Upper West Side's 101 West 78th Street has one- to five-bedroom park-view condos and one extraordinary rooftop penthouse thoughtfully conceived by Stephen Sills.Upper West Side's 101 West 78th Street has one- to five-bedroom park-view condos and one extraordinary rooftop penthouse thoughtfully conceived by Stephen Sills.Upper West Side's 101 West 78th Street has one- to five-bedroom park-view condos and one extraordinary rooftop penthouse thoughtfully conceived by Stephen Sills.Upper West Side's 101 West 78th Street has one- to five-bedroom park-view condos and one extraordinary rooftop penthouse thoughtfully conceived by Stephen Sills.Upper West Side's 101 West 78th Street has one- to five-bedroom park-view condos and one extraordinary rooftop penthouse thoughtfully conceived by Stephen Sills.Upper West Side's 101 West 78th Street has one- to five-bedroom park-view condos and one extraordinary rooftop penthouse thoughtfully conceived by Stephen Sills.