Smoking and vaping are strictly prohibited throughout almost the entire Estate of Versailles, including all indoor areas of the Palace, the Trianon, and the Grand Canal. This ban extends to the vast majority of the Gardens and the Park as well, primarily for the preservation of the historic monuments and the protection of the delicate flora. The rules are very specific: the only location where smoking is generally tolerated is the Honor Courtyard (Cour d'Honneur), which is the large open cobblestone area before you enter the palace gates. Once you pass through the security checkpoints into the manicured gardens or the museum, you must refrain from smoking. This policy is strictly enforced by security guards and groundkeepers to prevent fire hazards and litter. If you are planning a full day at Versailles (which often takes 6–8 hours), you should be prepared for the fact that you will be in a smoke-free environment for the duration of your tour, and leaving the gardens just for a cigarette break can be a long and inconvenient walk.