Paris is the capital city of France. Paris is situated on river Seine. Paris has many nicknames, but its most famous is 'The City of Light'. Paris has a temperate climate that rarely sees extremely high or low temperatures. Rainfall can occur at any time of the year, and Paris is known for its sudden showers. Paris is one of the world's leading business and cultural centers, and its influence in politics, education, entertainment, media, fashion, science and the arts all contribute to its status as one of the world's major global cities. Paris is France's foremost center of economic activity. Paris hosts the head offices of almost half of the major French companies, as well as the headquarters of fifteen of the world's 100 largest companies. Paris also hosts many international organizations such as UNESCO, the OECD, the ICC, or the informal Paris Club.