In 1917, Marcel Duchamp exhibited a urinal in a gallery, and changed the idea of art forever. This piece of work, and his humorous take on the Mona Lisa, are at Tate Modern for the exhibition Duchamp, Man Ray, Picabia until May 26.

To coincide with the final weeks of this iconic show, The Times and Tate Modern are offering you the chance to win a trip to Paris, where these artists met to exchange ideas critical to the development of modern art.

The lucky winner will fly with Air France — from one of the nine UK airports the airline departs from — for two nights at the Hotel Paris Le Faubourg, located a few steps from the Avenue Champs-Elysées and the exclusive Faubourg Saint-Honoré shopping district. This authentic Parisian hotel has elegant guestrooms, an intimate restaurant, an interior garden and a stylish bar, plus a relaxing new fitness centre with hammans.

To be in with a chance to win answer the following question:

Which Parisian gallery is home to the Mona Lisa?

To enter, click here

Terms and conditions
1. One entry per person.
2. Competition open to UK and RoI residents aged 18 and over, except employees of The Times or Tate Modern, their families, agents or any other person connected with the competition.
3. Competition closes at midnight on May 12, 2008. Winner will be notified by May 14.
4. The prize, for two people, consists of return flights with Air France between the UK and Paris, and two nights at the Hotel Paris Le Faubourg with breakfast. The prize also includes a gift from the hotel consisting of either a fruit basket, macaroons or a bottle of wine depending on the guests day of arrival.
5. Travel to and from the departure airport and other expenses are not included.
6. The winner and guest must hold a valid passport.
7. The prize holiday is subject to availability and must be taken by May 31, 2009.
8. For more information on Air France, go to airfrance.co.uk
9. Entry limited to one per person. The winner is responsible for ensuring they are able to accept the prize as set out and in accordance with these terms and conditions, in the event they are unable to do so then the TNL reserves the right to redraw the prize.
10. Entry is free but entrants should be aware that they may be subject to local call charges depending on their own individual arrangements for Internet access.
11. By entering, all eligible entrants agree to abide by each and all these terms and conditions. Misrepresentative or fraudulent entries will invalidate an entry. TNL reserves the right, with or without cause, to exclude entrants and withhold prizes for violating any of these terms and conditions. TNL reserves the right to amend these terms and conditions. Any amendments will be published on the Website.
12. Unless otherwise specified, the winner(s) will be drawn at random from all correct entries received before the closing date. Winners will be notified within 28 days after the closing date. All reasonable endeavours will be made to contact the winner during this time. If a winner cannot be contacted or is not available, TNL reserves the right to re-draw another winner from the correct entries which were received before the closing date.
13. TNL reserves the right to publish entries (including parts of entries) other than the winning entry and publication does not necessarily mean the entrant has won a prize.
14. Entrants will retain copyright in their submitted entries, however, by entering, all entrants licence TNL a worldwide royalty-free perpetual licence to edit, publish and use each entry in any and all media (including print and online) for publicity and news purposes.
15. TNL will not be liable for any failure of receipt of entries. TNL takes no responsibility for any entries that are lost, delayed, illegible, corrupted, damaged, incomplete or otherwise invalid. Entries will not be acknowledged or returned.
16. Other than death or personal injury arising from the acts or omissions of TNL or its employees, TNL will not be liable for any loss or damage arising out of the winner’s (or their guest’s) enjoyment of the prize.
17. There is no cash or other alternative to the prize stated and the prize is not transferable and no part or parts of the prize may be substituted for other benefits, items or additions.
18. By entering, any subsequent prize winners agree to allow the free use of their names, photographs and general locations for publicity and news purposes during this and future promotions by TNL or any associated or subsidiary company of News International Limited.
19. Uses of personal data received by TNL in the course of the promotion are subject to the privacy policy found on the Website. Winners' names may be published on the Website.
20. Winners may be required to submit valid identification before receiving their prize.
21. The Editor's decision is final and binding on the entrants. No correspondence will be entered into.
22. TNL reserves the right at any time to cancel, modify or supersede the competition (including altering prizes) if, in our sole discretion, a competition is not capable of being conducted as specified. TNL reserves the right to substitute a prize of equal value in the event that circumstances beyond their control make this unavoidable.
23. For a list of winners please send a stamped envelope to The Times Competitions Department, 1 Virginia Street, London, E98 1RL, England, stating for which competition you would like winners’ details.
24. Competition rules published in The Times or on the website form part of these rules. Promoter: Times Newspapers Limited (address above).