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Urban beautification campaigns are usually sold to local residents as a way to improve . Design elements – from lighting systems to signs, benches, bollards, fountains and planters, and sometimes even surveillance equipment – are used to refurbish and embellish public spaces.

Designers refer to these elements as “urban furniture”. And the projects they’re used in are usually aimed at increasing social interaction, heightening safety, improving accessibility and generally making life in the city better.

, however, that such  in public urban spaces becoming . Despite the promises with which they are marketed, if these projects , they can feel less able, or willing, to make use of these spaces.

Cities aren’t only identified by their monuments or signature buildings. You can tell New York City and Palermo apart just by looking at what people are doing in public. A New York scene is more likely to feature someone on a skateboard eating a burrito, while a Palermo image might include a group of men in a street watching a football match on television through a shop window.

Urban space is where city children learn and play, students read and people work, walk and relax. It is through these different activities that any single city’s urban culture is created.

Quite what city spaces  is down to , a powerful tool.

Architects, infrastructural and spatial designers carefully configure the built environment – the constructed fabric of our cities – and this has a lasting effect on how we use or inhabit them.

In cities around the globe – from Algiers, Auckland and Chicago to Hanoi,  and Seoul –  that transforming public spaces  the diversity of what people do in them, and whether they use them.

, the Algerian capital, neighbourhoods were formally designed in the 1970s in a rigid modernist style. Design elements including shady trees, benches and lights at night made people feel comfortable carrying out activities such as playing cards or gathering to chat, but huge buildings, wide streets and large spaces also caused people to feel insecure and . Further, the land was landscaped in the kind of homogenous way characteristic of other big cities including Los Angeles, Auckland and Sydney. These  designs have also been linked to antisocial behaviour.

 conducted in the historic  neighbourhood of  highlight similar patterns of  caused by how a neighbourhood was redesigned.

After the area was transformed in 2013, there was a notable decline in the diversity of the activities people undertook there (family and religious gatherings; street art; music; informal vendors). Instead, the law now prioritises touristic activity over local people’s everyday needs and allows the authorities to operate a zero-tolerance approach towards anything deemed disruptive. Vendors have become nomadic, packing up and hiding as soon as the police are nearby.

In the  of Seoul, South Korea, meanwhile, redevelopment led to 50-year-old workshops being torn down. This in turn has threatened the historical and cultural values of the local population and disrupted social networks.

How cities are co-created

In his 1968 book, , the French Marxist philosopher and sociologist Henri Lefebvre described the city as a co-created space. This contrasts with the more capitalist definition in which urban space is  to be bought and sold, Lefebvre saw it as a meeting place where citizens collectively built urban life.

This idea that public space is a public good that belongs to everybody has been increasingly challenged in recent years, with the rise of . Most of the parks in London (roughly 42 kilometres squared) of green space in total) are owned by the City of London Corporation, the municipal body that governs the City of London, but increasingly squares within new developments are .

Urban theorists have long noted the connection between how a city is designed and how life is conducted within it. The US scholar  is famous for highlighting that cities fail when they are not designed for everyone. And Danish architect ’s output has consistently focused on what he has termed the “life between buildings”.

As Gehl , for a city to be good to its residents, those in charge of designing it have to be aware of how it is being used: what people are doing in its spaces. To be successful, urban designs have to be focused on and geared towards people’s daily lives. Gehl has explained that designing a city for pedestrians – at a walkable scale – is how you make it healthy, sustainable, lively and attractive.

When we use public spaces, even if only on a short-term basis, we are effectively :  and  talk about  to describe the individual or group activities with which we invest these spaces.

Research has also highlighted how democratic this can be. But it is contingent on those spaces being designed in consort with residents. When a public space, by contrast, is overly designed without people’s needs being taken into account, it does not get used.

Since the 1970s, urban theorists  that we only make use of those public spaces where we feel . For urban design to work, paying heed to  of their city is crucial.

Jose Antonio Lara Hernandez is a Senior Researcher and PhD student in the School of Architecture.

This article is republished from The Conversation under a Creative Commons Licence. .