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  2. Border barrier - Wikipedia

    en.wikipedia.org/wiki/Border_barrier

    A border barrier, border fence or border wall is a separation barrier that runs along or near an international border. Such barriers are typically constructed for border control purposes such as curbing illegal immigration , human trafficking , and smuggling .

  3. Ha-ha - Wikipedia

    en.wikipedia.org/wiki/Ha-ha

    Comparison of a ha-ha (top) and a regular wall (bottom). Both walls prevent access, but one does not block the view looking outward. A ha-ha (French: hâ-hâ [a a] ⓘ or saut de loup [so dÉ™ lu] ⓘ), also known as a sunk fence, blind fence, ditch and fence, deer wall, or foss, is a recessed landscape design element that creates a vertical barrier (particularly on one side) while preserving ...

  4. Defensive wall - Wikipedia

    en.wikipedia.org/wiki/Defensive_wall

    A defensive wall is a fortification usually used to protect a city, town or other settlement from potential aggressors. The walls can range from simple palisades or earthworks to extensive military fortifications such as curtain walls with towers, bastions and gates for access to the city. [1]

  5. Syria–Turkey barrier - Wikipedia

    en.wikipedia.org/wiki/Syria–Turkey_barrier

    The Syria–Turkey barrier is a border wall and fence under construction along the Syria–Turkey border built in an attempt at preventing illegal crossings and smuggling from Syria into Turkey. [1] [2] The barrier on the Syrian border is the third longest wall in the world after the Great Wall of China and the Mexico-United States border wall. [3]

  6. West Bank barrier - Wikipedia

    en.wikipedia.org/wiki/West_Bank_Barrier

    An often-quoted example of the effects of the barrier is the Palestinian town of Qalqilyah, a city of around 45,000, which is surrounded almost on all sides by the barrier. One 8 meter-high concrete section of this wall follows the Green Line between the city and the nearby Trans-Israel Highway.

  7. Mexico–United States border wall - Wikipedia

    en.wikipedia.org/wiki/Mexico–United_States...

    Map of the Mexico–United States border wall in 2017 Border fence near El Paso, Texas Border fence between San Diego's border patrol offices in California, U.S. (left) and Tijuana, Mexico (right) The border wall along the Mexico–United States border is intended to reduce illegal immigration to the United States from Mexico. [1]

  8. List of walls - Wikipedia

    en.wikipedia.org/wiki/List_of_walls

    Part of the southern section of the Chester city walls showing the base of a former drum tower and the River Dee The Roman walls of Lugo are a UNESCO World Heritage Site The Walls of Ston are a series of defensive stone walls, originally more than 7 kilometres (4.3 mi) long, that surrounded and protected the city of Ston, in Dalmatia, part of the Republic of Ragusa, in what is now southern ...

  9. Ancient Roman defensive walls - Wikipedia

    en.wikipedia.org/wiki/Ancient_Roman_defensive_walls

    Section of the Servian Wall Section of the Roman walls of Lugo, Spain, 263–276 AD. Defensive walls are a feature of ancient Roman architecture.The Romans generally fortified cities, rather than building stand-alone fortresses, but there are some fortified camps, such as the Saxon Shore forts like Porchester Castle in England.