An airport is an aerodrome with facilities for flights to take off and land.〔Wragg, D.; ''Historical dictionary of aviation'', History Press 2008.〕〔(【引用サイトリンク】title=Airport - Definition of airport by Merriam-Webster )〕 Airports often have facilities to store and maintain aircraft, and a control tower. An airport consists of a landing area, which comprises an aerially accessible open space including at least one operationally active surface such as a runway for a plane to take off〔(【引用サイトリンク】title=Runway - Definition of runway by Merriam-Webster )〕 or a helipad,〔(【引用サイトリンク】title=Helipad - Definition of helipad by Merriam-Webster )〕 and often includes adjacent utility buildings such as control towers, hangars 〔(【引用サイトリンク】title=Hangar - Definition of hangar by Merriam-Webster )〕 and terminals. Larger airports may have fixed base operator services, airport aprons, air traffic control centres, passenger facilities such as restaurants and lounges, and emergency services.
An airport with a helipad for rotorcraft but no runway is called a heliport. An airport for use by seaplanes and amphibious aircraft is called a seaplane base. Such a base typically includes a stretch of open water for takeoffs and landings, and seaplane docks for tying-up.
An international airport has additional facilities for customs and immigration.
In warfare, airports can become the focus of intense fighting, for example the Battle of Tripoli Airport or the Battle for Donetsk Airport, both taking place in 2014. An airport primarily for military use is called an airbase or air station.
Most of the world's airports are owned by local, regional, or national government bodies.
==Landside and airside areas==
Airports are divided into landside and airside. Landside includes parking lots, public transport railway stations and access roads. Airside includes all areas accessible to aircraft, including runways, taxiways and ramps. Passage between landside and airside is tightly controlled at all airports. To access airside, you must go through Passport Control and Security, this applies to everyone, including staff.
Most major airports provide commercial outlets for products and services. Airports may also contain premium and VIP services. The premium and VIP services may include express check-in and dedicated check-in counters. In addition to people, airports move cargo around the clock. Many large airports are located near railway trunk routes.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』