Even if you are able to switch to 220, you will need an adapter for Switzerland. Please make sure that any adapter that you buy will work in Switzerland. Clothes You need to follow the weather reports for a week or so. Dress for spring-like weather, but have something warmer if it goes down 50 degrees. The dress at the United Nations is business wear.
Geneva has beautiful parks and the lake.
You won t have too much spare time, but you may want to bring athletic clothes for those areas. Business Cards You will be meeting a lot of people in Geneva and it will be helpful to have business cards. I m telling you, it will be easier this way than writing your contact information fifty million times on little pieces of paper. You can also buy Swiss army knives and other traditional gifts like T-shirts, hats, etc. Medicine Please bring all prescription medicine with.