Well, you could work on cruise ship, you could work as flight attendant, you can be a pilot, you can be in military, you can be in international business...and so on. Some may require degrees, so you may want to look into going to college or university.
Traveling the world is a dream for many people and that's not easy to do. You won't be able to get a loan since you're way too young and if your parents aren't paying for it, you probably won't be able to go to many places. UNLESS you take advantage of volunteer work abroad. You'll have to stay there, work there for low fee or no fee but you will be able to travel.