Paris is the capital and most populous city of France, with over 2 million residents within its 105 square kilometer area. It has been a major center of finance, trade, fashion, science, and arts since the 17th century. The city is the center of the Paris Region, which has a population of over 12 million people and was the largest metropolitan area in Europe in 2020. Paris is a major transportation hub served by two international airports and its metro system carries over 5 million passengers daily, making it the second busiest in Europe. The city is renowned for its museums and architectural landmarks, including the Louvre which received over 2.8 million visitors in 2021 despite closures from COVID-19.