This article is a travel topic
Naturism – also known as Nudism or a Clothes-Free lifestyle – has a small but enthusiastic following in a number of countries around the world. It's not about sex, but a preference to abandon the artificial – and often functionally unnecessary – use of clothing to cover parts of the body. However, as nudity is often considered socially unacceptable, naturists often have difficulties finding travel destinations where they can practice their lifestyle and have their state of undress accepted.
Many countries have laws that make nudity in a public place either a crime or at least a misdemeanor offense. Also, many societies associate nudity with erotic entertainments, which are often strictly controlled or forbidden. As a result, naturist destinations are often in remote, out of the way places, and discretely advertised to avoid attracting the undesirable attention of those would would interfere with this lifestyle, either by trying to put a stop to it or by using it as a source of personal amusement.
Some naturist resorts (often called "nudist camps" by the public) are "clothing optional", leaving it up to the individual whether to wear clothing and/or how much. Others require nudity, to discourage visits by voyeurs who just want to look at naked people, and to maintain an egalitarian "we're all nude here" atmosphere. Many locations maintain fairly strict codes of public conduct, intended to keep them suitable for families with minor children and/or to avoid running afoul of laws against "lewd conduct" in public. Learn the expectations of any specific naturist destination before traveling there.
The most common naturist destinations are beaches where nude bathing and sunbathing are either tolerated in practice or formally permitted. Whether naturism is tolerated at a particular beach is usually judged from local information, the relative remoteness of the location and whether the naturist feels reasonably inconspicuous.
On a 'mixed beach' without signs to demarcate an area allocated for naturism, a tension can arise between naturists and others over territory: adherents of each group feel presence of the other group spoils their enjoyment of the beach. This gives rise to dynamic situations where the suitability of a beach for naturism changes from time to time, shifting according to which group arrived first, and invisible demarcation lines seem to arise that tend to concentrate a naturist minority into "ghetto" areas.
In Belgium naturism is only allowed in dedicated in-land spots and saunas and in the beach of Bredene close of Oostende. Out of Bredene naturism is not allowed in Belgian beaches. Before the opening of the naturist beach of Bredene to the practice of naturism in 2002, Belgians had to go the beaches of the Netherlands, usually Groede in West-Zeeuws Vlaanderen (Seeland), as there are no naturist beaches in the Nord Department of France. An exception has always been the natural reserve of Het Zwin, an empty beach between Knokke-Heist and the Dutch border, where naturism is not legal, but it has been traditionally tolerated. To avoid the increasing violations of privacy in the internet, the City Council of Bredene has strictly prohibited all types photography in the beach.
Croatia was the first country in Europe to start with the concept of commercial naturist resorts. According to some estimates about 15% of all tourists that visit the country are naturists or nudists (more than one million each year). There are more than 20 official naturist resorts as well as a number of the so-called free beaches which are unofficial naturist beaches, sometimes controlled and maintained by local tourist authorities. Naturist beaches in Croatia are marked as "FKK".
On the sea: Naturism is quite common on the German coast of the Baltic sea even without designated areas (marked by "FKK"), but less common on the coast of the North sea. On lakes and rivers (not supervised): On lakes and rivers there is no general rule. On some places naturism is practised, explicitly stated, or at least tolerated, on other places it is not. If in doubt, do as the locals do. Topless sunbathing is tolerated virtually everywhere. In swimming baths: In swimming baths and indoor pools naturism is generally not tolerated, even toplessness might cause troubles with the pool attendant and eviction from premises. In some places naturism is mandatory during special hours or evenings, those would be marked by "FKK" as well. Places To Go: If visiting Berlin, the Thermen Am Europa Center opposite the Crowne Plaza hotel on Nurnberger Strasse (close to KaDeWe and Zoo Station) is fully FKK and has indoor and outdoor pools, a full range of saunas, steam baths and hot tubs, etc., plus a reasonably priced restaurant.
Greece has only a few explicitly naturist resorts on the island Crete, and tourist information offices have said that naturism is not permitted elsewhere. There are however many beaches on the islands where naturism is tolerated.
The principal Italian naturist resort is Club Le Betulle, in the village of La Cassa about 20 miles north-west of Turin.
Another importatant naturist location is Borgo Corniola, in the middle of Tuscany hills, not far from Florence. An ancient coaching inn now converted to a B&b. Almost every weekend, special naturism events take place in the borgo, with Aufguss sauna and swim in the natural river. 
Although there no officially designated naturist resorts, there are several beaches frequented by naturists: Coast, eastwards:
Vicinity of big cities:
The naturists' guide to Poland is available at 
Since the arrival of democracy in Spain after the death of General Franco, nudity is legal over the whole of the Spanish territory and nobody can be fined for the simple fact of being naked. Nevertheless, some city councils prefer to allocate specially dedicated locations to naturists. Moreover, there are many locations in Spain that although they are not specially dedicated by the councils to naturism, they have a long established history of naturist practice.
There are about a dozen official naturist beaches. The popularity of the beaches ranges from Studland with about 2,500 users on a good day to Cleat's Shore where you are unlikely to see anyone else at all. Even the remote Holkham Bay on the North Norfolk Coast had about 500 users one Sunday in September 2005.
Whilst public nudity in Britain isn't explicitly illegal anywhere, it becomes a crime if you are 'causing offense' - therefore it would be very unwise to practice naturism even on the beach unless it is specifically designated as such.
Topless bathing is not generally accepted as much in the United Kindom as it is in mainland Europe, but it is still practiced on some beaches - try and make a personal judgment based on the people nearby.
There are well over a hundred clubs ranging from little more than a patch of grass to residential resorts.
Well over a hundred swimming pools and leisure centres offer naturist sessions.
Laws about nudity differ throughout the United States. Places like Fire Island are operated by the U.S. Park Service, which doesn't always cite offenders. They only seemed bothered if you are in a family area like Ocean Beach. They might ask you to move further up the beach if someone complains. On beaches controlled by New York state, however, nudity is illegal. Toplessness is legal anywhere in NY except for "lewd" displays, as in strip clubs, though of course that doesn't mean it will always be accepted.