Glass Rooftop Penthouse, London, United Kingdom

Penthouse residents often have fine views of the city skyline. Access to a penthouse apartment is usually provided by a separate elevator. Residents can also access a number of building services, such as pickup and delivery of everything from dry cleaning to dinner; reservations to restaurants and events made by building staffers; and other concierge services.
Penthouses are usually luxuriously appointed, with meticulous interior design and the finest fittings, from high-end appliances to unique and costly flooring. For example: the top floor penthouse of Robert A. M. Stern’s 15 Central Park West 20-story apartment building in New York has the following luxurious features:
• Set on a rooftop terrace, the penthouse has a view of the midtown skyline and at its feet is the whole geometry of Central Park.
• Penthouse ceiling was constructed to be thirteen and half feet high. Windows were made to be as high and wide as they could.