The interior top of a room or other enclosure.Generally not a structural element, but a finishedsurface concealing the underside of the floor or roof structure above.

Today, the (entrance) hall of a house is the space next to the front door or vestibule leading to the rooms directly and/or indirectly. Where the hall inside the front door of a house is elongated, it may be called a passage, corridor (from Spanish corredor used in El Escorial and 100 years later in Castle Howard) or hallway.[from wikipedia]

An elevator (US and Canada) or lift (UK, Australia, Ireland, New Zealand, India, South Africa, Nigeria) is a type of vertical transportation that moves people or goods between floors (levels, decks) of a building, vessel, or other structure. Elevators are generally powered by electric motors that either drive traction cables and counterweight systems like a hoist, or pump hydraulic fluid to raise a cylindrical piston like a jack.[from wikipedia]

Façadeis the notable front part of a building

Rotating blades move air to cool or exhaust. Fans produce air flowswith high volume and low pressure, as opposed to compressors whichproduce high pressures at a comparatively low volume.

Provide fire egress and criminal escape.A fire escape consists of a number of horizontal platforms, one at eachstory of a building, with ladders or stairs connecting them. Theplatform and stairs are usually open steel gratings, to prevent thebuildup of ice, snow, and leaves.

Notable building by name

The basic subdivisions within any building