Nudity
Most of the places were people are nude with others are semi-private. Access is limited usually by gender (men or women only), by age (as in schools), or other factors. Most of the places for practicing naturism are semi-private, limited by membership or entry fee. There are both written rules and informal expectations that must be observed. When an entire society understands naturism, as in Germany, clothing-optional areas within public space become semi-private.