My sister finds herself in a situation where she does not have a job, no boyfriend, but about 30K saved. She wants to hitchhike or travel across the world. Any ideas on how she can do this? where she should go? Are threr listings of hostels and places she can stay?

She loves to hike and snowboard, she is very adventurous but she only speaks English. She wants to ski/hike the Alps walk the Great Wall etc.
Honestly I am kind of jealous of her she has savings and no commitment I won't be able to do anything like this till I am old.