Honolulu is a destination with a ton of festivals, making it great for someone in their 20s to visit. For instance, the annual Hawaii Food & Wine Festival is based there with over 150 internationally renowned master chefs, culinary personalities, winemakers, and mixologists. The 135-room Shoreline Hotel Waikiki was recently redesigned to attract millennials with its new "neon meets nature" theme, which features vibrant photo backdrops and hotel decor worthy of social media posts.