Glass Rooftop Penthouse, London, United Kingdom

Design
Penthouses also differentiate themselves from other real estate properties by their unique features such as high-end appliances, finest materials fitting, luxurious flooring system, and more.
A penthouse apartment may have additional exclusive features not found in the majority of apartments in the building, such as a private entrance or elevator, or higher/vaulted ceilings. In buildings consisting primarily of single level apartments, a penthouse apartment may be distinguished by having two or more levels. They may also have such features as a terrace, fireplace, more square footage, over-sized windows, multiple owner suites, den/office space, jacuzzi, and more. They might be equipped with luxury kitchens featuring stainless steel appliances, granite counter-tops, breakfast bar/island and more.
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.