They slip between the cracks in society, flitting between rich and poor quarters, city and countryside.
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Created by Leeds City Council's parks and countryside service, the garden features two 12ft (3.6m) high lock gates and a mock canal.
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The urban population of the world is forecast to grow to 6.3 billion people in 2050 from 3.4 billion in 2009, representing both population growth and net migration from countryside to city.
For them, as for all campers, the decision on where to put up camp depends on whether they need a spot for the night or longer, and if they are in the city or countryside.
While some Romans retreat to the countryside on Easter, the city remains festive and crowded.
The BMW spent a fair amount of its trip in city driving, twisting through the countryside on back roads and stuck in traffic jams.
Its green belt, which restricts building in countryside close to the city, is strangling industrial and housing development.
Unscrupulous landlords in the city crammed migrants from the countryside ten to a room, and stopped fixing the toilets.
Working in the city and living on one's own land far out in the countryside has always been a goal for many Americans.
The most remarkable part of the story hasn't taken place in the Cambridgeshire countryside that houses Huntingdon and its labs but in the City of London.
Although having a reputation as providing the "insiders" tour of the city, Mike's also offers a countryside tour that takes you up the Amstel and out into the nearby terrain of windmills, clog factories and cheese farms.
The city council said it did not know what had happened to the rabbits and that one of its countryside team would be be going there to investigate.
Scientists also recorded countryside great tits and found they sang at a lower pitch and, in turn, city birds found the rural droll difficult to understand, the study found.
The initial idea for Heyri was developed in 1995 by a Seoul-based arts collective that wanted a place in the countryside where its 380 members could reside and create art as a refuge from the big city.
The changes to Britain's edible landscape have sprouted out of concerns about the environment and healthy living, and city dwellers like 44-year-old Sharp have been inspired to do what villagers in the countryside have done for years: Grow and harvest their own.
The total population of Yizheng and the surrounding countryside is currently 560, 000, with approximately 200, 000 people living in the city itself.
Now there are 200, 000 people who have left the city alone, altogether an estimated 400, 000 at least have left other cities to head to the mountains and the countryside, and hundreds of them are living with almost no protection.
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