Mosuo Women

The Mosuo people are known as the ‘Kingdom of Women’ because the Na are a matrilineal society: heterosexual activity occurs only by mutual consent and mostly through the custom of the secret nocturnal ‘visit’;[2] men and women are free to have multiple partners,[2] and to initiate or break off relationships when they please. Mosuo culture does have characteristics of a matriarchal society, in that women are the head of the household, the property is passed down through the female line, and the women make business decisions; yet political power tends to be in the hands of males, disqualifying them from matriarchy status. After the coming of age ceremony, Mosuo women are allowed their own private bedroom within the household in which they live; men are not afforded this advantage.

Source: en.wikipedia.org