MEN’S FITNESS—There are certain things 20-somethings refuse to spend money on, including cars, cable, Costco, and even housing. Last year, 26 percent of millennials opted to live at home with their parents, according to a study from the Pew Research Center. Don’t call them stingy, but rather strategic. Young Americans are choosing to reallocate their income (about $200 billion a year) to more worthwhile investments, such as travel. Where are they going? Extraordinary environments that offer wondrous experiences best captured on Instagram or other preferred social media channels. Some socially shareable places include the following three trips designed with the millennial in mind.