The penthouse is the ultimate expression of contemporary urban living. As much a state of mind as a physical space, the word 'penthouse' evokes excitement, drama, exclusivity and escape. First emerging a century ago with the dawn of the skyscraper, the penthouse has become the aspirational talisman of the modern global city. Penthouse brings you inside incredible apartments such as the $235 million One Hyde Park Penthouse in London, New York's Central Park Tower - the world's highest residential building - and the supertall Steinway Tower. It also surveys a different side to penthouse style, from coastal residences in Hong Kong, Cape Town and the Gulf to mid-century penthouses in the Hollywood Hills. A stunning photographic journey in a luxury, fabric-bound edition, Penthouse is an exploration of style at the extremities, told through interviews with the most talented designers working today - designers who are creating spaces that define and defy the frontiers of urban living.