If you're going as a tourist, I think the word "visit" would work well. Example: "Today I am going to visit Tokyo, and tomorrow I will visit Yokohama." Visit isn't what I would call "formal", but it should be very appropriate for such a form. Visit should also be fine for speaking of your activities informally. Also, you can say, "I will travel to whatever city or place you intend to go to. If you would go into more detail about what you're going to be doing, it would help others to give you suggestions. What are you going to be doing? Sailing? Fishing? Visiting museums?
