Time Travel to the Future

When I was a kid I always thought about time traveling, I watched movies such as "Back to the future" that showed time traveling and I wonder to travel to the future and see my future self and see what  I am doing at the time. But if I think about it better I don´'t want to see my future, I prefer it to be a surprise.

Maybe I want to go to the past to see my grandfather who died when I was nine years old. I would like to talk to him. 

I have always been a history fan, so I would go to the past in my time machine to see some historical figures such as Napoleon Bonaparte, Abraham Lincoln, Marie Curie and meet them. Also I would go to the ancient Rome to see historical buildings as the Roman Colisseum, ancient Greek Buildings and the Egyptian pyramids in its prime. 

With the time traveling I could solve so many historical questions such as why did the Incas leave Machu Pichu?, is it true that Hitler died in his bunker or did he run away to Argentina? Answers that you can only get if you were there in that time.