Our visit options Download our groups catalogue   Formula 1 : The Gallery of Machines Duration of the visit : 1h30 approx. (1h in the Gallery; ½h exploring the gangways above the Workshop, the branch, and the site) Adult group : minimum 15 people paying admission, subject to space availability. Prices : Adult : 6 € / Under 18’s : 3 € Handicapped access   Formula 2 : The trip in the Elephant Duration of the visit : 1h30 approx. (1h in the Elephant; ¾ h exploring the terraces of the Workshop, the branch, and the site) Adult group : minimum 15 people paying admission, subject to space availability. Prices: Adult : 6 € / Under 18’s: 4 € Handicapped access : 1 seat per trip.   You can combine formulas 1 and 2, subject to space availability and opening hours of the Gallery and the Elephant.   Information & booking for groups Reservations required for groups.   From Monday to Friday from 9h to 12h and 14h to 17h Nantes culture&patrimoine Group booking service By telephone : +33(0)2.51.17.49.99 (adult groups only) By fax : +33(0)2.51.17.48.65 By e-mail : reservation@lesmachines-nantes.fr                                                                      By post : Nantes culture&patrimoine - Group booking service - 1-3 rue Crucy - BP 92211 – 44 022 Nantes cedex 1