Hostile Architecture: 15 Urban Design Tactics Explained

[00:00:01]Segmented Bench This is one of the most common  forms of hostile architecture.

[00:00:06]The design's primary purpose is to prevent   homeless individuals from  sleeping on public benches.

[00:00:12]By adding solid armrests or vertical  dividers at regular intervals, the   bench remains usable for individual sitting but  becomes impossible for reclining or lying down.

[00:00:24]This tactic subtly transforms a  piece of public furniture from   a place of potential rest into a tool  for enforcing a specific, limited use.

[00:00:36]Sloped Bench A more subtle but equally effective deterrent,   the sloped bench is designed to be uncomfortable  for long-term sitting and impossible for sleeping.

[00:00:47]The seat is installed at a slight downward angle,   forcing a person to constantly use their  leg muscles to keep from sliding off.

[00:00:56]This creates a temporary,  short-term seating solution   that actively discourages loitering  or resting for any extended period.

[00:01:06]It gives the appearance of public seating while  removing the comfort it's meant to provide.

[00:01:13]Leaning Bench A recent innovation in hostile design,   the leaning bench, or "perch," removes  the concept of sitting altogether.

[00:01:22]This is a narrow, raised rail, often made of metal  or wood, that a person can only lean against.

[00:01:29]It offers a brief moment of relief from  standing but provides no real rest.

[00:01:34]These are often installed at bus stops  or outside commercial buildings to   keep people moving and to prevent  any form of long-term gathering,   prioritizing transit and  commerce over public comfort.

[00:01:48]Divided Armchair A common sight in airports, bus  stations, and hospital waiting rooms,   this style applies hostile  design to individual chairs.

[00:02:00]Instead of a continuous bench,  seating is provided as a   row of individual armchairs,  with fixed, solid armrests.

[00:02:08]This prevents anyone from lying down across a row  of seats to rest during long layovers or waits,   prioritizing orderly, individual sitting and  maximizing turnover over traveler comfort.

[00:02:21]Surface Spikes This is one of the most aggressive and  unambiguous forms of hostile architecture.

[00:02:28]This tactic involves embedding  metal studs, spikes, or raised,   uncomfortable bumps onto flat surfaces like  window sills, wide ledges, and covered alcoves.

[00:02:39]Their sole purpose is to make these flat,   sheltered areas physically painful  and impossible to sit or lie on.

[00:02:47]Often called "anti-homeless  spikes," they are a direct   and often controversial method of denying  access to public or semi-public spaces.

[00:02:59]Skate Stoppers These are the small, metal brackets or clips  that are bolted at intervals onto railings,   ledges, and planters in urban areas.

[00:03:10]This style is aimed at a different demographic: Skateboarders.

[00:03:14]Skate stoppers are specifically  designed to break up a long,   smooth edge, making it impossible  to "grind" along the surface.

[00:03:23]While intended to prevent property damage  and noise, this tactic also actively removes   a form of recreation and creativity from public  spaces, redesigning the city to be less playful.

[00:03:36]Uncomfortable Seating This is a broader strategy  of providing "seating" that   is intentionally painful or awkward  to use for more than a few minutes.

[00:03:46]This can take many forms, from individual,  cage-like metal stools to scattered,   jagged boulders in a plaza  where a bench would normally be.

[00:03:56]The goal is to give the impression of providing  a public amenity while ensuring that no one,   particularly homeless individuals or loitering  teenagers, will ever get comfortable there.

[00:04:08]It’s the illusion of rest without the reality.

[00:04:13]Decorative Boulder This is one of the most insidious  forms of hostile architecture,   where deterrence is disguised as aesthetic choice.

[00:04:22]Instead of installing benches or leaving  open space, planners will fill a public   plaza or a space under an overpass  with a dense arrangement of large,   jagged rocks or other uncomfortable  landscaping elements like spiky plants.

[00:04:38]This prevents anyone from sitting, sleeping,   or gathering, while allowing officials to  claim they are simply 'beautifying' the area.

[00:04:49]Camden Bench This is a world-famous, purpose-built piece  of hostile design, commissioned by the Camden   council in London. The Camden Bench is a  singular object made of molded concrete,   designed to resist almost every "unwanted" use.

[00:05:06]Its surface is sloped and  uneven to prevent sleeping.

[00:05:10]It has no crevices to hide drugs and is coated  in anti-paint material to deter graffiti.

[00:05:17]There are no flat ledges for skateboarding,  making it the ultimate multi-purpose tool   for social control, disguised as a  piece of minimalist public furniture.

[00:05:28]Frequency Deterrents This is a form of auditory hostile  architecture that targets a specific age group.

[00:05:36]The most famous example is the "Mosquito" device,   which emits a very high-frequency  sound that is intensely annoying to   teenagers and young adults but is typically  inaudible to people over the age of 25.

[00:05:50]These are often installed outside shops or in  public parks specifically to prevent young people   from congregating, using a targeted sonic weapon  to control who can comfortably use a public space.

[00:06:05]Blue Lighting A more specific sensory deterrent,  this style involves installing deep   blue lighting in public and semi-public bathrooms.

[00:06:14]The blue light is intended to  prevent intravenous drug use.

[00:06:18]This is because the monochromatic blue light   makes it very difficult for a  person to see their own veins.

[00:06:24]While implemented as a public  health and safety measure,   it is a clear example of using architectural  design to inhibit a specific, unwanted behavior.

[00:06:34]Anti-Urination Surfaces A direct response to public urination, this style   involves modifying walls and corners to  make the act difficult or unpleasant.

[00:06:46]This can be as simple as installing angled metal   plates in corners to deflect  liquid back at the person.

[00:06:53]More advanced versions use super-hydrophobic,  or "splash-back," paint that repels   urine, causing it to splash onto the  shoes and trousers of the offender.

[00:07:04]It's a form of architectural  self-defense for buildings.

[00:07:09]Targeted Sprinklers An active, rather than passive,  form of hostile architecture,   this involves the use of sprinkler  systems in areas where people might   try to sleep or shelter, such as  under awnings or in park corners.

[00:07:25]These sprinklers are often set on timers  to go off at night, not to water plants,   but to drench the area and anyone in  it, making it impossible to stay there.

[00:07:35]It is a direct use of infrastructure to  physically drive people out of public spaces.

[00:07:42]Inconvenient Shelter This is a subtle but common style where a public   amenity is designed to be  intentionally inadequate.

[00:07:51]The bus shelter is built with a very narrow,   angled roof that provides minimal  protection from rain or sun.

[00:07:59]It may feature a leaning bench instead of  a full seat, or have no seating at all.

[00:08:04]The design provides the illusion of shelter  while actively discouraging people from   finding any real comfort, ensuring it is  only used for the briefest possible time.

[00:08:16]Gated Alleys This style is about controlling the flow of  people and denying access to semi-public spaces.

[00:08:24]It involves installing lockable  gates at the entrances to alleys,   underpasses, or the recessed  doorways of closed businesses.

[00:08:33]While argued as a measure to prevent  crime or anti-social behavior,   it effectively privatizes public rights-of-way and  removes sheltered spaces from the public realm,   especially impacting the homeless  who might seek refuge there.

[00:08:50]Removal of Amenities Perhaps the most subtle and systemic form of   hostile architecture is not what  is built, but what is not built.

[00:08:59]This is the conscious decision to not  provide public amenities like bathrooms,   water fountains, or even sufficient  seating in public squares and transit hubs.

[00:09:10]By making a space fundamentally inhospitable  and lacking in basic human comforts,   planners can effectively discourage  people from spending any significant   amount of time there, thus controlling the  public without installing a single spike.

[00:09:27]Thanks for watching.

[00:09:28]What is your opinion on this type of architecture?

[00:09:31]Let me know in the comments down below.

[00:09:33]Also, be sure to like and  subscribe if you enjoyed.