Public domain lands are those that cannot be sold since they are considered to belong to the whole community. Public domain land is managed by a public entity like, in different countries, the State, a region, a province or a municipality, directly or by institutes or state companies. It is referred to as dominio público (Spanish), domínio público (Portuguese), domaine public (French) or demanio pubblico (Italian). Examples of public domain land are the margins of the sea and of rivers, roads, railways, ports, airports, military areas, etc..