Left-luggage lockers (automatic and/or manual) are available at some of the main train stations in Paris and the Paris region so that you don't have to carry your bags around with you. Just as a precaution, it is advisable not to place valuable objects in the lockers. Lockers may be temporarily unavailable for security reasons. Locker fees (flat-rate fee for initial 24-hour rental period): small locker - €5.50; medium locker - €7.50; large locker - €9.50. Then €5 per each additional 24-hour period.
Gare de l'Est: metro level, near the Paul bakery - from 8am to 8pm daily (including public holidays).
Gare de Lyon: hall 3, level -1, exit on the rue de Bercy side - 6.15am to 10pm daily (including public holidays).
Gare Montparnasse: hall 1, level 2, near track 24 - 7am to 11pm daily (including public holidays).
Gare du Nord: level -1, access by escalators and fixed, opposite track 3 and next to the rue de Maubeuge exit - from 6am to 11:15pm (including public holidays).
Gare d'Austerlitz : Services area, sector tracks 1 to 7 - 6am to 10pm daily (including public holidays).
Gare Marne-la-Vallée - Chessy: Level +1 – 7am to 10pm daily (including public holidays).
Aéroport CDG 2 TGV: level 4, opposite the Sheraton hotel - 6am to 9.30pm everyday (including public holidays).