A penthouse is a structure on top of a building that does not use up the entire roof area. They are often built on city skyscrapers and may be sold or rented as luxury apartments.

Penthouses often contain private balconies, terraces or gardens because they are built away from the main walls of the building supporting them.

Penthouses usually provide sought-after views of urban skylines and a variety of high-end features, such as fireplaces, deluxe kitchens and stylish appliances.