Iranian women stroll through a Tehran Park: women-only green spaces are now on the rise in Iran. Photograph: Behrouz Mehri/EPA

I love to take off my headscarf, says Laleh, 47, a hairdresser from Tehran. Shes sitting with a group of friends around one of the many picnic tables in the Mothers Paradise, a park in the Iranian capital. Shes wearing a fringed mint-green T-shirt through which you can see her bare stomach. We can wear airy clothes here, and thats a freedom I really enjoy.

Behind her, a group of women wearing T-shirts and skinny jeans are dancing to loud pop music. One of them climbs on top of a table and sways her hips to the rhythm of the music. A group of schoolgirls wearing white headscarves stop to watch.

We hate the headscarf, says one of Lalehs friends, a retired nurse. We are so happy to be able to go to a place where we can walk around uncovered, do sports and sunbathe.

We can wear airy clothes here and thats a freedom I really enjoy

In the capital of the Islamic Republic of Iran, women must abide by a strict dress code: a headscarf, long trousers and a coat that covers the hips. Those who flaunt the rules risk the wrath of the morality police.

But here at Mothers Paradise park, the women who have hung their headscarves and coats on the branches of trees nearby arent breaking any rules: this is one of Tehrans women-only parks, a popular new development across the country.

The Mothers Paradise was the first to open in the capital, in 2008. Three subsequently materialised in other neighbourhoods and then spread to other cities. In the popular tourist city of Isfahan, for example, there are now five.

While women-only parks also exist in other Islamic countries including Pakistan, Afghanistan and Saudi Arabia to offer women recreational spots safe from sexual harassment, in Iran they have at least ostensibly also been set up for health reasons.

Reza Arjmand, a sociologist at the University of Lund, Sweden, who recently published a book about the parks, says Vitamin D deficiency is a problem in Iranian cities, where women are forced to cover themselves in public and often live in apartments with small windows that dont admit much sunlight. A study in 2001 for the ministry of health revealed an alarming growth in the number of women developing osteoporosis, which Arjmand says inspired the authorities to start building the parks.

Traditionally it wasnt considered decent for Persian women to walk around in parks, Arjmand says. And after the Islamic revolution of 1979 the government deemed parks for women unnecessary. But when it turned out that the next generation runs medical risks because their mothers are unhealthy, the authorities became interested.

According to Arjmand, the parks also offer the authorities a great chance to take segregation of women and men to another level and for this reason many Iranian women are fiercely critical of them.

These parks are an insult and I will never go there. I refuse to be secluded in a reservation, says Roya, a feminist writer who asked for her name to be changed. If you put women in separate parks, men and women will never learn how to interact in a normal way. This can lead to dangerous situations.

These parks are an insult. I refuse to be secluded in a reservation

Criticism has also come from conservative Iranians. The pro-government sociologist Ali Entezahi has stated that parks where headscarves can be removed will only cause confusion among women, because they might start doubting the necessity of covering themselves up in public at all times.

At the Mothers Paradise, women eat lunch in pavilions, some train on outdoor fitness equipment, others buy soft drinks at a kiosks or are busy with their children. There are girls in miniskirts and shorts, but some women prefer to keep their coats and scarves on. A large metal fence shuts out the outside world. Female guards in blue uniforms with white gloves and a whistle keep a keen eye on everything. It is strictly forbidden to take photographs.

And on closer inspection, the parks are not as woman-friendly as their name suggests. Though there are a few playgrounds for children, there are no changing facilities for babies, and boys above the age of five are not allowed to enter. According to Arjmand, it was initially announced that women would be involved in the development of the spaces, but in the end they were designed solely by men. We have many great female architects and urban planners in Iran, but they havent even been asked for their opinion.

Finding suitable locations for the parks has also been problematic, because of the risk that men could see in from a window or a balcony from a neighbouring building. As a result, many of the green spaces are situated in suburban areas, which make them difficult to reach for many women. Some are also required to close early, to prevent a confrontation between unveiled women and male gardeners who come to water the plants meaning working women are unable to use them.

It is a strange paradox: Iran is building parks for women but doesnt seem to have considered the qualities that would make them uniquely attractive to them.

Nevertheless, Arjmand does see a positive side to the development. No matter how you look at it: a group of women will benefit from these parks. For women from religious families this is often the only possibility to spend time outside without a headscarf.

Its true that these parks isolate women, but it also offers a group of them a freedom they formerly did not possess.

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'We hate the headscarf': can women find freedom in Tehran's female-only parks? - The Guardian