At naturist organised events or venues clothing is usually optional, except by swimming pools or sunbathing lawns where complete nudity is expected, weather permitting.
This rule is sometimes a source of controversy among some naturists.
People interested in social nudity can attend clothes-free beaches and other types of ad-hoc nudist events.
Facilities for naturists are classified in various ways.
A landed or members' naturist club is one that owns its own facilities, while non-landed (or travel) clubs meet at various locations, such as private residences, swimming pools, hot springs, landed clubs and resorts, and rented facilities.
Landed clubs can be run by members on democratic lines or by one or more owners who make the rules.
The social nudity movement includes a large range of variants including "naturism", "nudism", "Freikörperkultur (FKK)", the "free beach movement" as well as generalized "public lands/public nudity" advocacy.
There is a large amount of shared history and common themes, issues and philosophy, but differences between these separate movements remain contentious.