If you could touch anything in the world, what would it be?

I overheard someone the other day asking someone else on the bus if they could go to any place in the world, where would it be? it got me thinking. Many times, people ask if I could see, what would I look at? What would I want to see most? then, I thought some more. What things if I could would I like to touch that I have never touched? Things that maybe it wouldn't be safe to touch or that I probably never will touch. Say like the surface of the moon for example. A lion or tiger or polar bear! The feeling of being on the top of mount everest say! But I'll have to think more about things I would like to touch and try to find a way to do that.