From Paris, A1 or A3 motorway heading towards Charles de Gaulle, Lille. Take Charles de Gaulle, Senlis exit and follow the signs to Senlis and Roissy en France, then to A1 Paris and Roissy en France. Enter Roissy en France and follow the signs for A1 Lille, ZA Parc de Roissy.From Lille, take the A1 motorway heading towards Paris. Take exit 6 Charles de Gaulle. Follow the signs for Autres Zones, Zone Technique, then Zone Centrale, Autres Directions, then Paris, Roissy Ville (ZA Parc de Roissy).