Types of gates

alt=A drawing of a door from the Lexikon der gesamten Technik.|thumb|A door

fall structure with a fixed chamber in which the water level changes

monumental structure in the shape of an archway

thumb|The torii at Itsukushima Shrine

gate which is, or was, set within a city wall

thumb|250px|A 19th-century drawing of what the Propylaia (Acropolis of Athens)|Propylaea in Athens might have looked like when intact thumb|250px|Propylaea of Baalbeck In ancient Greek architecture, a propylon ( or ; Ancient Greek ) is a monumental gateway, also referred to as a propylaeum (, a Latinized form of ), and often given in the plural as propyla or propylaea. It serves as a partition, separating the secular and religious parts of a city. The prototypical Greek example is the propylaea that served as the entrance to the Acropolis of Athens, which inspired Greek Revival architecture su

A gopuram or gopura is a monumental entrance tower, usually ornate, at the entrance of a Hindu temple, in the Dravidian architecture of South India, and Sri Lanka. In temples in other parts of India, they might be present but are more modest, while they are often the highest parts of the temple in the south. They also appear in architecture outside India such as the Khmer architecture in South East Asia.

thumb|Portcullis at Desmond Castle, Adare, [[County Limerick, Ireland]] thumb|The inner portcullis of the Torre dell'Elefante in [[Cagliari, Sardinia, Italy]]

bar or pole pivoted on a fixed support to block vehicular or pedestrian access through a controlled point

thumb|Old turnstiles at Alewife (MBTA station)|Alewife station on the [[MBTA Red Line in Cambridge, MA, U.S.]] A turnstile (also called a gateline, baffle gate, automated gate, turn gate in some regions) is a form of gate which allows one person to pass at a time. A turnstile can be configured to enforce one-way human traffic. In addition, a turnstile can restrict passage only to people who insert a coin, ticket, transit pass, security credential, or other method of payment or verification. Modern turnstiles can incorporate biometrics, including retina scanning, fingerprints, and other individ

thumb|Postern doubling as a sallyport in the flank of a [[bastion at Dömitz Fortress in Germany]]

thumb|right|280 px|An airlock on board Space Shuttle Atlantis

A torana (tawr-uh-nuh) is a free-standing ornamental or arched gateway for ceremonial purposes in Hindu, Buddhist and Jain architecture of the Indian subcontinent. Toranas can also be widely seen in East Asia and parts of Southeast Asia. Chinese Shanmen gateways, Japanese torii gateways, Korean Iljumun and Hongsalmun gateways, Vietnamese Tam quan gateways, and Thai Sao Ching Cha may have derived from the Indian torana. They are also referred to as vandanamalikas.

thumb|A decorated paifang in Shanghai A paifang, also known as a pailou, is a traditional style of Chinese architecture, often used in arch or gateway structures.

Door that opens automatically, usually upon sensing the approach of a person

thumb|right|The southern entrance to York, Micklegate Bar

tower built over or next to a major gateway

airport facility or equipment to facilitate passenger loading and unloading

right|thumb|A wooden stile in Esha Ness, [[Shetland]]

pedestrian door or gate, particularly one built into a larger door or into a wall or fence

building style

ceremonial gate tower in traditional Chinese architecture

fortified gate, leading directly from a castle or town wall directly on to a quay, riverside or harbour

upright|thumb|A lychgate in Ceredigion, [[Wales, decorated for a wedding]]

form of lock gate consisting of a large floating iron or steel box

shinto torii gate

secure, controlled entryway to a fortification or prison

heavily fortified gateway of a castle or a city wall

fortification for a bridge

type of gate