Ethical or philosophical nudism has a long history, with many advocates of the benefits of enjoying nature without clothing. At the turn of the 20th century, organizations emerged to promote social nudity and to establish private campgrounds and resorts for that purpose. Since the 1960s, with the acceptance of public places for clothing-optional recreation, individuals who do not identify themselves as naturists or nudists have been able to casually participate in nude activities. Nude recreation opportunities vary widely around the world, from isolated places known mainly to locals to officially-designated nude beaches and parks.