Wanting to know where I should travel to to propose to my gf.

Hey guys. This is my first Reddit post. I have been dating my gf for 2 years now and when we go on this trip itll be a little over 2 and a half years. I want to know where you guys think is the best spot to vacation to to propose to her. Should we go to Spain and Portugal, or Greece, or Italy, or Hawaii. What do you guys think is the best choice.