Go to college. It's the better option for your long term future and can put you in a better position to travel throughout your life. Without the education I had, I would never have had the opportunity to live in Italy for many years
Go to Greece and have the trip of a lifetime .
Or , go to college and get the chains of modernday life firmly fastened on , and spend the rest of your life wishing you'd gone when you had the chance .
Obviously college, you can go to Greece later on. It costs 1-2 grand just for a ticket. Plus about 50-70 bucks a day (unless you have some where to stay). You do the math
college can lead to better future. Getting high class job that give you money, a fancy house, and much more awesome stuff