6 months. I think the time with people more like myself would be where I would meet the most diverse people. It would be an adventure in its own to share so many times with a wide range of people. My friend had been to like 20 countries before 30 which is harder to do being from the Usa,no trains like in Europe. He would fly in fill a backpack with food and stay in hostiles.
Pass to your choice of music festival or weekend alone in a secluded tree house in the woods?