The largest parks can be vast natural areas of hundreds of thousands of square kilometers (thousands of square miles), with abundant wildlife and natural features such as mountains and rivers. There are also amusement parks which have live shows, fairground rides, refreshments, and games of chance/skill. Amusement parks are the largest types of park in the world. In many large parks, camping in tents is allowed with a permit. Many natural parks are protected by law, and users may have to follow restrictions (e.g., rules against open fires or bringing in glass bottles). Large national and sub-national parks are typically overseen by a park ranger or a park warden. Large parks may have areas for canoeing and hiking in the warmer months and, in some northern hemisphere countries, cross-country skiingand snowshoeing in colder months.
