A high proportion of human societies have chosen some form of gender segregation and it is one of the biggest criticisms westerners often level at non-western societies. In recent years there is evidence that western civilisation may be adopting increased gender segregation but only when it excludes men. A lot of gender segregation in western countries is being driven by feminists who state that they often feel threatened by men, sometimes merely by their presence.
Examples of Women-only facilities
There is a Lesbian-only cemetery in Germany.
Domestic Violence Shelters
Throughout the world, domestic violence shelters are nearly universally available only to women.
Women-only gyms are common throughout the west and widely known about.
There are a few hotels around the world that advertise as men-only although it is unlikely that this is enforced in western nations.
A women-only market has recently opened in London.
Parking Spaces & Roads
Australia, China, Kuwait, Malaysia, Indonesia, Austria, Italy, and South Korea now have women-only parking spaces in some areas.   This practice is even more widespread in Germany. The town of Triberg in Germany created male-only and female-only parking spaces, allocating the more difficult parking spaces to men. It is unclear if the town had to backtrack under feminist pressure.
There are women-only police stations in Brazil, Argentina, Guatemala, Peru and India. Australian academics have been studying the Argentinian model with a view to the introduction of women-only police stations in Australia.
Some public spaces in Australia have women-only seating. The image to the right shows such seating in Melbourne.
Jessica Valenti, a well known feminist blogger, has explicitly proposed gender segregation on public transport. Some countries are already doing this. There are women-only bus seats in Switzerland and India. There are women-only train carriages in Malaysia, Germany and other countries. There has even been a proposal for women-only seating sections on aircraft.
Men are not permitted to travel on trains during certain hours in Chennai, India.
Women only restaurants are becoming common.
The city of Hamilton New Zealand seriously considered banning men from a public swimming pool during certain times, creating women-only swimming sessions. 
McIver's Ladies Baths is an ocean pool owned by a local city council in Australia. The Baths are open to women and children only.
Taxis & Ride Sharing
New York City has a women-only taxi service. Although they have apparently had trouble finding sufficient female drivers. A similar service has been proposed for Melbourne, Australia, and is in use elsewhere.
US universities have female only education sessions.
The US has a growing number of female-only co-working spaces.
This raises the interesting question about whether it was women who drove segregation in other societies. This would be interesting considering that gender segregation in non-western countries today is often claimed as principally disadvantaging women.
It may be reasonable for a society to permit gender segregation, but it must be on just and equal terms. Thus a society should permit both men-only and women-only organisations only if they are available on equal terms. A society should allow both or it should allow neither. Currently women in the west continue to enjoy uninterrupted access to women-only spaces and organisations while men are today largely prohibited from having men-only spaces and organisations.
- Women only trains and transport. How they work around the world.
- Chariot for Women
- Sandman on Women-only restaurants
- Police in Bangalore, India to fine men who sit in seating reserved for women
- Elle Magazine advocating for women-only spaces