The majority of people moving through airports are traveling either for work or play. Some want to work right up until they get to play, while others want to take a break and play until they get to where they’re headed to work. Airport design has to achieve a balance of these desires, but rarely does it well. A new airport lounge for Air France at Charles de Gaulle makes a playful attempt, with a soothing design as an abstracted, spa-like park. Tree-shaped lights with leaf-patterned shades light the space. Portland Int’l brings actual greenery to travelers, building in a lush, green vertical garden. And Korea’s Incheon Int’l goes all play, with a skating rink and museum, among other amenities.