The Netherlands, informally Holland, is a country in Western Europe along the North Sea coast. In Europe, it consists of 12 provinces that border Germany to the east, Belgium to the south, and the North Sea to the northwest, with maritime borders in the North Sea with those countries and the United Kingdom. Together with the Caribbean Netherlands, consisting of Bonaire, Sint Eustatius, and Saba, it forms a constituent country of the Kingdom of the Netherlands. The country's official language is Dutch, with English and Papiamentu as secondary official languages in the Caribbean Netherlands, and West Frisian as a secondary official language in the province of Friesland. Dutch Low Saxon and Limburgish are recognised regional languages, while Sinte Romani and Yiddish are recognised non-territorial languages.
The four largest cities in the Netherlands are Amsterdam, Rotterdam, The Hague, and Utrecht. Amsterdam is the country's most populous city and nominal capital, while The Hague holds the seat of the States General, Cabinet and Supreme Court. The Port of Rotterdam is the busiest seaport in Europe, and the busiest in any country outside Asia.