You cannot wear high heels or any type of sandal to visit CERN, so pay attention to your footwear. Sturdy, flat shoes are the best plan, though you can wear low heels that are squared off rather than pointed., CERN is in both France and Switzerland. While you're taking your tour, you might go across this border, so it's important to carry your passport with you. If you traveled from another country, inquire if you need a visa to visit either of these countries., Luggage isn't allowed on the premises at CERN, so you'll need to leave it behind. However, you can can bring purses and other small handbags, as well as cameras.Pets should also be left behind.
 Some areas of CERN may not be accessible to you under certain conditions, so you need to let them know in advance of your tour. For instance, if you have limited mobility, are pregnant, or have a pacemaker, you may not be able to visit some areas. If you have a ferromagnetic implant, you also need to let them know.Also contact them if you have anyone under 16 in your group.
Wear sturdy close-toed shoes.
Bring your passport and visa with you.
Store your luggage at your hotel.
Prepare CERN if you have special needs.
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