Say when Rachel will do it. Use when, as soon as, after, before. Rachel will visit the Great Lakes ... (to go) to America.

Rachel will visit the Great Lakes when she goes to America. Rachel will stay at the hotel as soon as she comes to New York. Rachel will take pictures of the American cities after she arrives there. Rachel will buy souvenirs when she goes to the shops. Rachel will tell her friends a lot of things about Native Americans after she comes back home.