Levallois-Perret is a commune in the northwestern suburbs of Paris, France. It is located 6.4 km (4.0 mi) from the centre of Paris. It is the most densely populated town in Europe. The name Levallois-Perret comes from two housing developments, Champerret (started by landowner Jean-Jacques Perret in 1822) and Village Levallois (founded by developer Nicolas-Eugène Levallois in 1845), which resulted in the incorporation of the commune. Levallois-Perret became an important centre of the early French automotive industry with the establishment of companies such as Clément-Bayard, Delage and coachbuilders Chapron and Faget & Varnet. Citroën purchased the Clément-Bayard factory and the famous Citroën 2CV was produced in Levallois for nearly forty years. Levallois-Perret was also an important centre of cosmetics industry in the early 20th century. It is also home to the large European commercial real estate company Atisreal and the conglomerate Alstom. The northern part of the famous Île de la Jatte in the river Seine, is where French impressionist painters created many of their masterpieces. Levallois-Perret has become a wealthy community.