Eastern Nanterre , contains a part of the La DÃ fense business district of Paris and some of the tallest buildings in Paris . The eastern part of Nanterre , bordering the communes of Courbevoie and Puteaux , contains a small part of the La Defense business district of Paris and some of the tallest buildings in the Paris region . Because the headquarters of many major corporations are located in La DÃ fense , the court of Nanterre is well-known in the media for the number of high-profile lawsuits and trials that take place in it .