From a mosaic-like garden in New York to a vertical forest in Milan, a new book is showcasing the stunning designs hidden on rooftops across the world.

Rooftops: Islands in the Sky explores how architects and designers are looking to the top of the skyline to expand the landscapes of dense cities. And the stunning, panoramic views afforded by their position are an added bonus.

Scroll through the gallery below to see photographs of rooftops from Copenhagen to New York

Rooftops: Islands in the Sky - in pictures Show all 10 1 /10 Rooftops: Islands in the Sky - in pictures Rooftops: Islands in the Sky - in pictures One Central Park, New York TASCHEN Rooftops: Islands in the Sky - in pictures The Vertical Forest in Milan by Stefano Boeri Laura Cionci / TASCHEN Rooftops: Islands in the Sky - in pictures SoHo Roof Terrace in New York by Gunn Landscape Architecture Donna Dotan Photography / TASCHEN Rooftops: Islands in the Sky - in pictures Rooftop Penthouses by JDS Architects, in Copenhagen. Julien Lanoo / TASCHEN Rooftops: Islands in the Sky - in pictures The Museum of Modern Art roof garden in New York TASCHEN Rooftops: Islands in the Sky - in pictures The Museum of Modern Art roof garden in New York TASCHEN Rooftops: Islands in the Sky - in pictures CapitaGreen by Toyo Ito in Singapore Kai Nakamura / TASCHEN Rooftops: Islands in the Sky - in pictures A rooftop on Central Park West, New York, by Gunn Architecture TASCHEN Rooftops: Islands in the Sky - in pictures The Fichte-bunker in Berlin TASCHEN Rooftops: Islands in the Sky - in pictures Skypark in Sinagpore by Aedas and PWP Landscape, and Arup TASCHEN

The nineteenth century domed Fichte-bunker in Berlin is an example of an accidental haven from the metropolis - once a gasometer it is now some's home - while the sculptural red and white funnel on top of Singapore's CapitaGreen channels wind to cool the inside of the building and shows how rooftops can be beautiful and functional.

Over 50 bars and restaurants, temporary art installations, and gardens from Sydney to Hong Kong, Oslo to Chicago are featured in the book.